What do you need to consider when transferring the sales order document number as a reference number to Financial Accounting (FI)?

Your customers submit payment for open accounts receivables by referring to the sales order document number, not the invoice number. You maintain the Customizing settings so that the sales document number is transferred as the reference number in the accounting document.

What do you need to consider when transferring the sales order document number as a reference number to Financial Accounting (FI)?
A . The sales revenues will be posted to a different account in FI when you use the sales order number as the reference number.
B . Using the sales order number as the reference number will lead to a posting block. You will have to release billing documents for transfer to F
D . Using the sales order number as a reference number could lead to an invoice split.
E . You have to maintain copy control entries from order-related billing documents to FI accounting documents

Answer: C