What should you recommend?

Your network contains an Active Directory domain named contoso.com. The domain contains 1,000 client computers that run Windows 10.
A security audit reveals that the network recently experienced a Pass-the-Hash attack. The attack was initiated from a client computer and accessed Active
Directory objects restricted to the members of the Domain Admins group.
You need to minimize the impact of another successful Pass-the-Hash attack on the domain.
What should you recommend?
A. Move the computer accounts of the domain controllers to a new organizational unit (OU). Remove the permissions to the new OU from the Domain Admins group.
B. Configure the Domain Admins groups as a restricted group.
C. Remove all the members from the Domain Admins group, and then remove the Domain Admins group from all other groups.
D. Instruct all administrators to use a restricted Remote Desktop connection when they sign in to a client computer