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 risky sexual behavior and other types of risky behavior are both symptoms of a certain personality profile which makes individuals more likely to behave risky in general.
D) These two behaviors are likely spuriously related by a third, unrelated (and unmeasured) variable.