Using Hping, You Wish to Enumerate the Rules of a Firewall

Multiple Choice

Using Hping, you wish to enumerate the rules of a firewall. You direct the traffic to a confirmed host and set the TTL value to one hop past the firewall, also incrementing the destination port by one with each packet. Return ICMP type 11 messages will tell you want the firewall allowed to pass.
What is this technique called?

A) Firewall footprinting
B) Firewalking
C) Firewall enumeration
D) Bounce scanning