Default invoice mode is on for Sales or Purchase entry. Which key should be pressed for entry of sales or Purchase as a voucher A. Alt + V B. Ctrl + V C. Alt + F8 D. Alt + F9

The correct answer is: A. Alt + V

When the default invoice mode is on, you can enter a sales or purchase as a voucher by pressing Alt + V. This will open the voucher entry screen, where you can enter the details of the transaction.

Option B, Ctrl + V, is used to paste text. Option C, Alt + F8, is used to open the Find and Replace dialog box. Option D, Alt + F9, is used to update the current field.

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