Reference:http://www.capitol.hawaii.gov/hrscurrent/vol07_ch0346-0398/HRS0378/HRS_0378-0003.htm(See
9th point)

According to the Basel Committee on Banking Supervision (BCBS), a sound KYC program should consist of four essential elements: (i) customer acceptance policy; (ii) customer identification; (iii) on-going monitoring of higher risk accounts; and (iv) risk management. Therefore, B and D are the correct choices among the given options. A customer acceptance policy defines the types of customers that the bank is willing to accept and the conditions for doing so. A risk management system ensures that the bank has adequate policies, procedures, and controls to identify, measure, monitor, and mitigate the risks arising from its KYC program.
References:
BCBS, Customer due diligence for banks, October 2001, p. 41
BCBS, Consolidated KYC Risk Management, October 2004, p. 42

Aproper investigation of unusual transactions requires a mix of data analysis, contextual review, and expert judgmentto assess potential risks.
Option B (Correct):Cross-referencing transactions with external factors(e.g.,political events, commodity price fluctuations, news reports) helps identifypotential links to illicit activities.
Option C (Correct):Therelationship managermay provide insights intowhether a transaction aligns with the customer's known profile and business activity.
Option D (Correct):Arisk-based approachensures thathigher-risk transactions receive enhanced scrutiny, while lower-risk ones undergo standard monitoring.
Why Other Options Are Incorrect:
Option A (Incorrect):Focusing only on transaction amountsignorescontextual factors, such asunusual behavior in low-value transactions.
Option E (Incorrect):Automated alerts are valuable but cannot replace human analysis and judgment.Manual reviews remain necessary for complex cases.
Red Flags in Unusual Transactions:
Large or frequent transactions inconsistent with a customer's normal profile.
Payments from/to high-risk jurisdictions without a clear purpose.
Use of intermediaries or shell companies to move funds.
Best Practices for AML Investigations:
Use both qualitative and quantitative factorsto assess transaction risks.
Collaborate with business units(e.g., relationship managers) to understand client behavior.
Apply a risk-based approach to allocate investigation resources efficiently.
Reference:
FATF Recommendation 10 (Customer Due Diligence)
Wolfsberg Group Guidance on AML Investigations
FinCEN Transaction Monitoring Guidelines

According to the Anti-Money Laundering Specialist (the 6th edition) resources, one of the challenges of online financial technologies is the difficulty of verifying the identity and legitimacy of the customers and counterparties. This creates opportunities for money launderers and other criminals to exploit the anonymity and speed of online transactions to move and conceal illicit funds. The other options are not directly related to the money laundering risk posed by online financial technologies.
ACAMS Study Guide for the Certified Anti-Money Laundering Specialist (the 6th edition), Chapter 5: Risk- Based Approach, page 133.
ACAMS Study Guide for the Certified Anti-Money Laundering Specialist (the 6th edition), Chapter 7: Money Laundering Risks and Methods, page 203.