Which tool should you use?

Your network contains an Active Directory forest named contoso.com. The forest contains a
single domain and 10 domain controllers. All of the domain controllers run Windows Server
2008 R2 Service Pack 1 (SP1).
The forest contains an application directory partition named dc=app1/dc=contoso,dc=com. A
domain controller named DC1 has a copy of the application directory partition.
You need to configure a domain controller named DC2 to receive a copy of
dc=app1,dc=contoso,dc=com.
Which tool should you use?

A.
Dsdbutil

B.
smgmt

C.
Dsamain

D.
Dsmod