In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Fact1: Blood pressure is highest in arteries and lowest in veins., Fact2: By the time blood leaves capillaries and flows into veins, pressure has decreased greatly., Question: What happens to blood pressure after it leaves the arteries? (A) Dehydration (B) negative (C) decreases (D) movement (E) sweating (F) Damages them (G) It expands (H) heat produced
C