If a Physician Asked a Man with Erectile Dysfunction If

If a physician asked a man with erectile dysfunction if he had nighttime erections,the physician would most likely be trying to determine:

A) if the man was at risk for HIV or AIDS.
B) if the man was dreaming normally.
C) if the man's erectile dysfunction was physiologically or psychologically caused.
D) if the man's wife was pregnant.
E) if the man had a sleep disorder.