Which two steps should be taken to set this up?

A user creating Opportunities wants to avoid manually entering information twice in order to have it appear on both the Opportunity record and the Payment record .

Which two steps should be taken to set this up?
A . Create Payment Mappings in NPSP Settings.
B . Create custom fields on the Payment object.
C . Create lookup fields on the Payment object.
D . Create a workflow that will copy Payment information to the Opportunity record.

Answer: A,B