Your network contains an Active Directory forest named contoso.com.
The forest contains a single domain.
The forest contains three Active Directory sites named SiteA, SiteB, and SiteC.
The sites contain four domain controllers.
The domain controllers are configured as shown in the following table.

You discover that the users in SiteC are authenticated by the domain controllers in SiteA and SiteB.
You need to ensure that the SiteC users are authenticated by the domain controllers in SiteB, unless all of the domain controllers in SiteB are unavailable.
What should you do?

A.
Create additional connection objects for DC3 and DC4.

B.
Decrease the cost of the site link between SiteB and SiteC.

C.
Create a site link bridge.

D.
Disable site link bridging.

Explanation:
By decreasing the cost between SiteB and SiteC, the SiteC users will be authenticated by SiteB domain controllers.
Note:
* A site link bridge connects two or more site links and enables transitivity between site links. Each site link in a bridge must have a site in common with another site
link in the bridge.
* By default, all site links are transitive.