Amy Doesn't Smoke Often, but She Would Like to Quit

Amy doesn't smoke often, but she would like to quit. She especially doesn't like to smell like cigarette smoke at work, but she has the frequent bad habit of smoking a cigarette after business meetings. Which of the following would be the most advisable action for her to attempt in order to conquer this workday habit?

A) She should ask her boss if she may be excused from more meetings.
B) She should give her cigarettes to a co-worker, who would be instructed to only give them to her at her lunch break.
C) She should begin taking a brisk walk around her building after the meetings instead of smoking.
D) She should just take three puffs on the cigarette after the meetings then throw the rest of the cigarette away.