Chad just had his first experience of sexual intercourse

After his orgasm, he expected to start all over again but found he could not regain an erection. This inability lasted twenty minutes. Chad felt embarrassed and thought there must be something wrong with him. What did Chad need to know?
a) This could be a sign of a major health problem, he should see a physician soon.
b) He is fine, he was in the resolution stage and experiencing a normal refractory period.
c) This could be a sign of psychological problems and he needs to see a counselor.
d) This means he is not with the right person and unconsciously knows this.

Answer: b