What is a benefit of using a group VPN?

What is a benefit of using a group VPN?

A.
It eliminates the need for point-to-point VPN tunnels.

B.
It provides a way to grant VPN access on a per-user-group basis.

C.
It simplifies IPsec access for remote clients.

D.
It provides a layer of redundancy on top of a point-to-point VPN mesh architecture.