Jeff and Wanda Use Condoms as Their Primary Form of Contraception

Jeff and Wanda use condoms as their primary form of contraception. As part of their foreplay, Jeff likes to tease Wanda by "dipping," during which he rubs the head of his penis on the opening of her vagina, but he does not insert it. What should Jeff and Wanda know?

A) This is a common behavior that is considered a method of safer sex.
B) They should remember to put on a condom before proceeding to full intercourse.
C) If they use condoms, Jeff should wear the condom before "dipping."
D) If Jeff is wearing a condom during "dipping," he will have to change condoms before having intercourse.