You need to add a line to your IPTables Firewall input chain that will stop any attempts to use the
default install of Back Orifice against hosts on your network (the 10.10.10.0 network). Which of the
following would be the correct command to use?

A.
ipchains -A input TCP -d 0.0.0.0/0 -s 10.10.10.0/24 31337 -J DENY

B.
ipchains -A input UDP -s 0.0.0.0/0 -d 10.10.10.0/24 p:31337 -j DENY

C.
ipchains -A input -s 0.0.0.0/0 -d 10.10.10.0/24 -p 31337 -j DENY

D.
ipchains -A input TCP -s 0.0.0.0/0 -d 10.10.10.0/24 31337 -j DENY

E.
ipchains -A input -s 0.0.0.0/0 -d 10.10.10.0/24 31337 -j deny