Which Cisco proprietary protocol will be used in LAN switches to control multicast traffic at the data link layer within a LAN switch?

Which Cisco proprietary protocol will be used in LAN switches to control multicast traffic at the data link layer within a LAN switch?

A.
MAC filters

B.
Cisco Group Management Protocol (CGMP)

C.
Cisco Discovery Protocol (CDP)

D.
IGMP

Explanation: