Function key to select contra voucher is A. F4 B. F8 C. F9 D. F7

The correct answer is A. F4.

F4 is the function key to select contra voucher in QuickBooks. Contra vouchers are used to offset or reverse entries made in other vouchers. For example, if you receive a refund from a customer, you would use a contra voucher to reduce the amount of money you owe them.

F8 is the function key to enter a new voucher. F9 is the function key to print a voucher. F7 is the function key to edit a voucher.

I hope this helps! Let me know if you have any other questions.