View the exhibit.

All switches shown in Exhibit 1 are HP Provision ASIC switches, which are implementing IGMP and multicast
routing with PIM. Routing switch B has just received the message shown in Exhibit 2 from routing switch A .
What can the network administrator assume?

A.
Routing switch B is responding to routing switch A’s state refresh inquiry.

B.
A host connected to routing switch B has joined the 239.0.0.1 group, and routing switch B wants to join the
RP tree for this group.

C.
Previously, routing switch B did not require 239.0.0.1 multicasts, but it now does due to a change in
topology or IGMP reports.

D.
A new multicast source for 239.0.0.1 has begun totransmit in a VLAN connected to routing switch B