Which of the following is the BEST tool to verify the cable is plugged into the correct port on the patch panel?

Which of the following is the BEST tool to verify the cable is plugged into the correct port on the
patch panel?

A.
Cable certifier

B.
Punch down

C.
Toner probe

D.
Cable tester

Explanation:
http://en.wikipedia.org/wiki/Logic_probe