Which of the Following Statements Are True About ICMP Messages

Which of the following statements are true about ICMP messages? (Multiple Choice)

A) ICMP messages can record time, including the original time, packet receiving time, and packet sending time.
B) ICMP messages are encapsulated in IP packets but not at the transport layer.
C) ICMP messages include error messages, control messages, request/response messages, and update messages.
D) ICMP does not support redirection.
E) ICMP messages cannot be used to detect a path's MTU.