How should the consultant accomplish this task?

A development director needs to understand which organizations have given to the nonprofit in some year prior to the current, but have not contributed to the nonprofit in the current year .

How should the consultant accomplish this task?
A . Customize the date range on the NPSP SYBUNT report for Accounts
B . Customize the date range on the NPSP SYBUNT report for Contacts
C . Create an Opportunity report that compares Contact donations from the previous fiscal year to the current
D . Customize the date range on the NPSP LYBUNT report for Accounts

Answer: B