Which of the Following Is True of the Coronary Arteries

Multiple Choice

Which of the following is true of the coronary arteries?

A) They drain into the right atrium inferior to the opening of the inferior vena cava.
B) Together they supply a small portion of the cardiac muscle with oxygen.
C) They originate at the base of the ascending aorta and are the first branches off this vessel.
D) They transport blood directly into the ascending aorta.
E) Blood pressure in these vessels is the lowest found anywhere in the systemic circuit.