View the exhibit.
Exhibit 1

Exhibit 2

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 to transmit in a VLAN connected to routing
switch B.