Which two things does the consultant need to set up to ensure that the membership rollups in NPSP will work properly?

A nonprofit organization has engaged a consultant to implement NPSP and has a large membership program it wants to manage in Salesforce.

Which two things does the consultant need to set up to ensure that the membership rollups in NPSP will work properly?
A . Ensure there is a custom field created for Membership Amount and selected for membership rollups
B. Check that the membership record type is selected for membership rollups.
C. Ensure there is an Opportunity record type set up for memberships
D. Check that the grace period is set up for memberships.

Answer: B,D