Charles Goes to See His Doctor for a Funny-Looking Kind

Charles goes to see his doctor for a funny-looking kind of wet sore at the base of his penis. It's not painful or itchy, but he thought he should get it checked out any way. Based on what you have read in the textbook, it is likely Charles will be treated with

A) acyclovir.
B) penicillin.
C) nothing; the infection will eventually leave the body spontaneously.
D) insecticides.
E) antiretroviral therapy.