Correct Answer: D
Explanation/Reference:
Comments by Vrykolakas: original was A. You must deactivate KCC. Don’t trust the red outline, this is the "All replication connections" part that really matters.
Comment by F: set the answer back for A to D because according to the text replication connections should be set manual, only possible by deactivating the KCC
The Knowledge Consistency Checker (KCC) is a component of Active Directory Domain Services (AD DS) that is responsible for generating the replication topology between domain controllers. Generating an efficient and fault-tolerant replication topology is an integral part of achieving data consistency between domain controllers.
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. The Knowledge Consistency Checker (KCC) uses the information on each site link to compute the cost of replication between sites in one site link and sites in the other site links of the bridge. Without the presence of a common site between site links, the KCC also cannot establish direct connections between domain controllers in the sites that are connected by the same site link bridge.