The following description of the Hello packet in the PIM protocol, which is wrong?

The following description of the Hello packet in the PIM protocol, which is wrong?
A . Hello packets are sent in multicast mode and the multicast address is 224.0.0.9.
B . Only after the router receives the Hello packets from the neighbor, it will accept other PIM control messages or multicast messages.
C . pim timer hello interval. Configure the interval for sending Hello packets in the interface view. The default period of Hello packets is 30 seconds.
D . pim hello-option holdtine interval configure the hello packets timeout value in the interface view.

View Answer

Answer: A