Although Oscar and Penelope Decided to Wait to Have Intercourse,they

Although Oscar and Penelope decided to wait to have intercourse,they agreed to make oral sex a part of their relationship.Is there anything they should know about oral sex?

A) No, as long as they both feel comfortable with the agreement.
B) Yes, many STIs can be transmitted through oral sex.
C) No, as long as they are monogamous.
D) Yes, oral sex always leads to intercourse.