Some Studies Suggest That Teens Who Take an "Abstinence Pledge

Some studies suggest that teens who take an "abstinence pledge" during the course of abstinence-only education:

A) are three times more likely to have sex than teens who receive sex education.
B) are much less likely to have sex than teens who receive sex education.
C) have sex just as much as teens who receive sex education but tend to be more monogamous.
D) have sex at the same rate as teens who receive sex education but are less likely to use birth control.