If you are a smoker who is trying to quit, you must FIRST understand that:

A) second-hand cigarette smoke is a health hazard to others.
B) smoking is a true addiction and quitting may not be easy.
C) smoking cessation medications are usually the most effective.
D) you will need the guidance of a physician or psychotherapist.

Answer: B) smoking is a true addiction and quitting may not be easy.