Which of the following statements is true?

September 29, 2021 by Admin

IGMP interface group report information
Ethernet6/l/l(40.1.1.1):
Total 1 IGMP Group reported
Group: 232.0.0.1
Uptime: 00:00:22
Expires: off
Last reporter: 40.1.1.3
Last-member-query-counter: 0
Last-member-query-timer-expiry: off
Group mode: include
Versionl-host-present-timer-expiry: off
Version2-host-present-timer-expiry: off
Source list:
Source: 20.1.1.56
Uptime: 00:00:22
Expires: 00:05:08
Last-member-query-counter: 3
Last-member-query-timer-expiry: 00:00:01
Source: 20.1.1.57
Uptime: 00:00:22
Expires: 00:00:17
Last-member-query-counter: 3
Last-member-query-timer-expiry: 00:00:01
The preceding information shows the entry status of an IGMP interface on Ethernet 6/1/1 on a router.

IGMP sequentially sends two messages; The source carried in one of the messages is 20.1.1.56 with no S flag bit set; the source carried in the other message is 20.1.1.57, with the S flag bit set to1.
IGMP sequentially 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 no S flag bit set.
IGMP sends only one message carrying two sources 20.1.1.56 and 20.1.1.57, with the 5 flag bit set to1.
IGMP sends only one message carrying two sources 20.1.1.56 and 20.1.1.57, with no S flag bit set.