Your network contains an Active Directory forest.
The forest contains two domain controllers.
The domain controllers are configured as shown in the following table:

All clientcomputers run Windows 7.
You need to ensure that all client computers in the domain keep the same time as an external time
server.
What should you do?

A.
From DC1, run the time command.

B.
From DC2, run the time command.

C.
From DC1, run the w32tm.exe command.

D.
From DC2, run the w32tm.exe command.

Explanation:
Reference 1:
http://technet.microsoft.com/en-us/library/cc816748.aspx
Change the Windows Time Service Configuration on the PDC Emulator in the Forest Root Domain
The domain controller in the forest root domain that holds the primary domain controller (PDC) emulator
operations master (also known as flexible single master operations or FSMO) role is the default time source for
the domain hierarchy of time sources in the forest.
Reference 2:
http://technet.microsoft.com/en-us/library/cc773263.aspx
Windows Time Service Tools and Settings
Most domain member computers have a time client type of NT5DS, which means that they synchronize time
from the domain hierarchy. The only typical exception to this is the domain controller that functions as the
primary domain controller (PDC) emulatoroperations master of the forest root domain, whichis usually
configured to synchronize time with an external time source.
W32tm.exeis used to configure Windows Time service settings. It can also be used to diagnose problems with
the time service. W32tm.exeis the preferred command line tool for configuring, monitoring, or troubleshooting
the Windows Time service.