A company need to retrieve a large number of rows from a DE via the API. Which two solutions would optimize the performance? Choose 2

The Contact Delete feature can be used within an Enterprise 2.0 account from which business unit?

A new record is appended to the Orders data extension each time a customer makes a purchase. Which SQL statement would select a unique list of subscribers who have made multiple purchases?

A company has chosen to use the REST API for triggered sends, but they continue to get the following error during their testing: "Unable to queue Triggered Send request. There are no valid subscribers." They were informed that the SOAP API provides more information about the error, and found that their payload did not include a required data extension field.
Which element of the SOAP API response provides this level of detail?

Northern Trail Outfitters' legal team is concerned about the daily import process that brings in subscribers to a Sendable Data Extension, even when records have already been targeted for deletion.
Which two true expected behaviors for these records occur in the event a send is initiated directly to this Sendable Data Extension?
Choose 2 answers