Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true (Choose two.)()。
A. Router C will use ICMP to inform Host 1 that Host 2 cannot be reached
B. Router C will use ICMP to inform Router B that Host 2 cannot be reached
C. Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached
D. Router C will send a Destination Unreachable message type
E. Router C will send a Router Selection message type
F. Router C will send a Source Quench message type