What does the term "Ethical Hacker" mean?

A. Someone who is hacking for ethical reasons.

B. Someone who is using his/her skills for ethical reasons.

C. Someone who is using his/her skills for defensive purposes. 

D. Someone who is using his/her skills for offensive purposes.

Answer: C

Explanation: Ethical hacking is only about defending your self or your employer against malicious persons by using the same techniques and skills.