What are two considerations the consultant should raise about enabling State and Country Picklists for NPSP?

A nonprofit organization using NPSP does a lot of mailings and wants to ensure states and countries are entered accurately into Salesforce. The nonprofit has heard about State and Country Picklists and asked its consultant about enabling them.

What are two considerations the consultant should raise about enabling State and Country Picklists and asked its consultant about enabling them.

What are two considerations the consultant should raise about enabling State and Country Picklists for NPSP?
A . NPSP Data Import object doesn’t support State and Country abbreviations in picklist form
B . The Individual ("Bucket") account model does not support State and Country Picklists
C . Predefined State and Country abbreviations on Address records must be used
D . State and Country Picklist values can only be configured on the Address object

Answer: A,C