Host 1 sends an ICMP echo request to remote sever1. Layer2 header of the frame containing the ping packet（）。

• A、The IP address of sever 1.
• B、The MAC address of NIC in sever 1.
• C、The IP address of F0/0 interface of router R1.
• D、The MAC address of the Fa0/0 interface of router R1.
• E、The IP address of the s0/0/0 interface of router R2
• F、The MAC address of the s0/0/0 interface of router R2