You have been called for a deeply disturbed psychiatric patient who has cut off the tip of his penis with a steak knife. Assessment reveals the 31-year-old male to be crying, with blood noted to his hands and pants. The primary assessment reveals no life threats and Emergency Medical Responders are applying oxygen to the patient. At this time, your priority is to:

A) place the amputated penis in sterile water.
B) control the bleeding.
C) prevent the patient from urinating.
D) determine why the patient cut himself.

B