What should you identify?

Your network contains five Active Directory forests.
You plan to protect the resources in one of the forests by using Active Directory Rights Management
Services (AD RMS).
Users in all of the forests will access the protected resources.
You need to identify the minimum number of AD RMS clusters required for the planned deployment.
What should you identify?A. Five root clusters

B.
Five licensing clusters

C.
One licensing cluster and five root clusters