The Patient Denies Smoking, Although the Smell of Tobacco Is

The patient denies smoking, although the smell of tobacco is strong in his hospital room. Which of the following statements by the nurse would be the most effective?

A) "Don't bother to lie to me. I know you've been smoking."
B) "It is very dangerous to smoke in bed."
C) "The hospital has policies against smoking."
D) "I can smell the tobacco, and I see your lighter on the bedside table."