What will cause R2 to send a (*.G) PIM Join towards the RP?

Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2 Gateways for VLAN 100 using PIM-SM signaling.

What will cause R2 to send a (*.G) PIM Join towards the RP?

A. R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host A.

B. R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host B.

C. R2 will send a (*.G) PIM Join when it first learns the MAC address of a locally attached host.

D. R2 will send a (*.G) PIM Join when its VLAN 100 configuration is committed.

Answer: D