Which Marketing Cloud product should NTO purchase as a solution?

Northern Trail Outfitters (NTO) has a franchise model which allows locally-owned stores to operate under the corporate umbrella. They are required by corporate policy to email each franchisee a monthly statement, but the statement cannot be publicly accessible

Which Marketing Cloud product should NTO purchase as a solution?
A . Email Rachments
B . Distributed Sending
C . Content Syndication
D . Analytics Builder

Answer: B