You have a DHCP server that runs Windows Server 2008 R2. You restore the DHCP database by using
a recent backup. You need to prevent DHCP clients from receiving IP addresses that are currently in
use on the network. What should you do?

A.
Add the DHCP server option 15.

B.
Add the DHCP server option 44.

C.
Set the Conflict Detection value to 0.

D.
Set the Conflict Detection value to 2.