Which statement is true about BGP peer group configurations?

A.
The use of peer group will increase the CPU load of the BGP process.

B.
Peer group is used to reduce the full mesh IBGP requirements for Transit AS.

C.
Peer group is used to sub-divide an AS into multiple sub-ASs to increase scalability.

D.
The use of peer groups allows the router to build BGP update only once for the entire peer group.

E.
IBGP and EBGP neighbors can be assigned to the same peer groups as long as all peer group members have a common outbound policy.

Explanation:
One update table is created for all members of a peer group.
Wrong Answer
1. A Peer groups reduce CPU, because less tables are maintained
2. B Peer groups do not change full mesh requirement
3. C Confederations are used to subdivide an AS