What hierarchy should be recommended?

A small restaurant franchise wants to implement Marketing Cloud to support their franchise owners. The corporate office the advertising copy and subscriber list. The owners of franchised stores add a customized local message to the marketing campaign.

What hierarchy should be recommended?
A . One parent business unit and a child business unit for franchise owners.
B. One parent business unit and a child business unit for each franchise owners
C. One business unit.
D. A parent business unit for each franchise owner

Answer: B