How can you achieve this?

There are already sales orders in the system. You increase the price of your products and want to invoice the new price for all unbilled sales orders.

How can you achieve this? Please choose the correct answer.
A . Use an invoice list for billing
B . Use the billing due list for billing
C . Set the pricing type in the copy control for the billing documents
D . Set the pricing type in the category in the billing documents

Answer: C