You Arrive at an Emergency Scene Where a Woman Is

You arrive at an emergency scene where a woman is in severe medical distress. She is attempting to take a nitroglycerin tablet. A contraindication for this patient is

A) if she has used Viagra or Cialis medications in the last 24 to 48 hours.
B) if her blood pressure is 30mm Hg above her baseline systolic blood pressure.
C) if she has already taken two tablets before your arrival.
D) if her heart rate is more than 50 beats per minute.