IGMP Interface Group Report Information Ethernet6/1/1(40

Multiple Choice

IGMP interface group report information Ethernet6/1/1(40.1.1.1) : The preceding information shows the entry status of an IGMP interface on Ethernet 6/1/1 on a router. Assume IGMP sends the group-and-source-specific Query message. Which of the following statements is true?

A) IGMP respectively sends two messages: The source carried in one of the messages is 20.1.1.56 with the S flag bit not set; the source carried in the other message is 20.1.1.57, with the S flag bit set to 1.
B) IGMP respectively sends two messages: The source carried in one of the messages is 20.1.1.56 with the S flag bit set to 1; the source carried in the other message is 20.1.1.57, with the S flag bit not set.
C) IGMP sends one message carrying two sources 20.1.1.56 and 20.1.1.57, with the S flag bit set to 1.
D) IGMP sends one message carrying two sources 20.1.1.56 and 20.1.1.57, with the S flag bit not set.