Your company has a hub-and-spoke network topology. The network spans several physical locations. Each location is configured as an Active Directory directory service site. There are two domain controllers in each site. You need to prevent the spoke sites from creating replication connections to other spoke sites in the event that all domain controllers in the hub site are unavailable. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A.
Clear the Bridge all site links option.

B.
Ensure that the Bridge all site links option is selected.

C.
Designate a preferred bridgehead server in each site.

D.
Create site links between each spoke site and the hub site.