Indicate by letters which of the following control activities match with the following descriptions: Separation of duties

Question:

Indicate by letters which of the following control activities match with the following descriptions:
Separation of duties (SD)
Restricted access (RA)
Proper authorization (PA)
Adequate documents and records (ADR)
_____1. Prenumbered invoices
_____2. Locking inventory in a warehouse
_____3. Manager approval of sales returns
_____4. Password protection of accounting software
_____5. Not allowing the clerk to sign checks

Accounts Payable
Accounts payable (AP) are bills to be paid as part of the normal course of business.This is a standard accounting term, one of the most common liabilities, which normally appears in the balance sheet listing of liabilities. Businesses receive...