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Q7 Single choice

A specific site received 91 ICMP_ECHO packets within 90 minutes from 47 different sites. 77 of the ICMP_ECHO packets had an ICMP ID:39612 and Seq:57072. 13 of the ICMP_ECHO packets had an ICMP ID:0 and Seq:0.

What can you infer from this information?

A
The packets were sent by a worm spoofing the IP addresses of 47 infected sites
B
ICMP ID and Seq numbers were most likely set by a tool and not by the operating system
C
All 77 packets came from the same LAN segment and hence had the same ICMP ID and Seq number
D
13 packets were from an external network and probably behind a NAT, as they had an ICMP ID 0 and
Seq 0

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