If the Standard Traceroute Tool Is Not Working, the Attacker

If the standard traceroute tool is not working, the attacker can then try which of the following?

A) Call the front desk and ask them to ping you, since traffic coming from them will be successful
B) Telnet to various ports and run a packet sniffer to watch the backscatter
C) "lft" is an advanced traceroute tool that can incorporate various Layer 4 techniques and it might work instead
D) Post a message on the nmap hackers mailing list and ask someone else to try it from their address