What is the purpose of MAC limiting?

What is the purpose of MAC limiting?

A.
MAC limiting limits the size of the CAM table and accelerates the aging of MAC addresses.

B.
MAC limiting sets a maximum rate on addresses learned over a period of time to minimize
possible congestion caused by flooding.

C.
MAC limiting limits the number of source MAC addresses that may be learned on an interface
and protects it from MAC spoofing.

D.
MAC limiting on a Layer 3 interface prevents a duplicate MAC address for a single IP address.

Explanation: