Which of the Following Conditions Would Cause the Amount of Blood

Which of the following conditions would cause the amount of blood entering the ascending aorta with each contraction of the heart to increase

A) The heartbeat would be speeded up by the parasympathetic nervous system.
B) Stimulation by the sympathetic nervous system would accompany this change.
C) The amount of blood entering the right atrium of the heart was increased.
D) The atrioventricular valves would not close.
E) The amount of blood sent to the lungs for oxygenation would decrease.