Which two of the following methods could you use to create vendor credit notes?

You work in the Sales office at ABC.com. The company uses Microsoft Dynamics AX 2012.
Which two of the following methods could you use to create vendor credit notes?

A.
You could create a purchase order and set the quantity to a negative value.

B.
You could create a sales order and set the quantity to a negative value.

C.
You could create a purchase order and set type of purchase to Returned Order.

D.
You could create a sales order and set type of purchase to Returned Order.

Explanation: