You need to remove the Active Directory Domain Services role from a domain controller named DC1

You need to remove the Active Directory Domain Services role from a domain controller named DC1. What should you do?

A.
Run the netdom remove DC1 command.

B.
Run the Dcpromo utility. Remove the Active Directory Domain Services role.

C.
Run the nltest /remove_server: DC1 command.

D.
Reset the Domain Controller computer account by using the Active Directory Users and Computers utility.