Your company has a single Active Directory directory service forest with a forest root domain and a child domain. The company has a main office and several branch offices. You are planning to remove the child domain. All of the domain controllers in the forest root domain are located in the main office, and all FSMO roles are on separate domain controllers. The last domain controller in the child domain is named DC1 and is located in a branch office. You attempt to remove Active Directory from DC1, but you receive an error message stating that the operation could not be completed. You need to remove Active Directory from DC1. What should you do?

A.
Restore connectivity to the domain controller that holds the Domain Naming Master role.

B.
Restore connectivity to the domain controller that holds the Schema Master role.

C.
Restore connectivity to the domain controller that holds the Infrastructure Master role.

D.
Restore connectivity to the domain controller that holds the PDC Emulator role.