What Do Researchers Believe Explains Why Some Individuals Who Engage

What do researchers believe explains why some individuals who engage in precocious, promiscuous, or unprotected sex are also highly likely to engage in other types of delinquent behavior?

A) It is likely that risky sexual behavior causes other types of risky and delinquent behaviors.
B) It is likely that risky and delinquent behaviors cause risky sexual activity.
C) It is likely that both types of behavior are symptoms of a certain behavioral profile.
D) These two behaviors are likely related by a third, unrelated (and unmeasured) variable.