Ana, a Moderate Smoker and Moderate Drinker, Has Just Discovered

Ana, a moderate smoker and moderate drinker, has just discovered that she is pregnant.What does most research suggest that Ana should do to make sure that her baby develops appropriately?

A) Quit both smoking and drinking immediately.
B) Quit smoking, and cut back on drinking to a social level only.
C) Quit drinking, but keep smoking so stress levels stay manageable.
D) Both are acceptable since both are in moderation.