One Reason That People Who Engage in Casual Sex May

One reason that people who engage in casual sex may not discuss their sexual histories with their sexual partner is that

A) they most likely use a condom.
B) doing so can be awkward and uncomfortable.
C) they are not usually intravenous drug users.
D) doing so is unimportant in terms of why they are attracted to each other.
E) none of the above