What Has Been Observed About Condom Use in Teenagers

What has been observed about condom use in teenagers?

A) Condom use decreases as teenagers get older because older teenagers feel using condoms implies they are not in a serious and mature relationship.
B) Condom use decreases as teenagers get older because teenagers switch to oral contraceptives.
C) Condom use increases as teenagers get older because teens know their partner will have had more previous sexual partners.
D) Condom use increases as teenagers get older because teenagers engage in more intercourse and less oral sex.