What can used to delete components from production?

A developer at Universal Containers is tasked with implementing a new Salesforce application that must be able to be maintained completely by their company's Salesforce administrator.
Which three options should be considered for building out the business logic layer of the application? (Choose three.)

The sales team at universal container would like to see a visual indicator appear on both account and opportunity page layout to alert salespeople when an account is late making payments or has entered the collections process. What can a developer implement to achieve this requirement without having to write custom code?

How should a developer create a new custom exception class?

A developer in a Salesforce org with 100 Accounts executes the following code using the Developer console:Account myAccount = new Account(Name = 'MyAccount');Insert myAccount;For (Integer x = 0; x
< 150; x++)
{Account newAccount = new Account (Name='MyAccount' + x);try {Insert newAccount;} catch (Exception ex) {System.debug (ex) ;}}insert new Account (Name='myAccount');How many accounts are in the org after this code is run?