A 49-year-old male has summoned EMS for crushing chest pain. He states that he needs his nitroglycerin, but it is in his car in a nearby parking lot. A friend states that he also takes nitroglycerin and hands you his bottle of nitroglycerin. The patient appears very sick. Given the patient's condition, your best action would be to:

A) administer the friend's nitroglycerin.
B) have the patient retrieve his nitroglycerin from the car.
C) ask the friend to get the patient's nitroglycerin.
D) administer half a pill of the friend's nitroglycerin.

C