Cardiovascular System

I thought the answer was A but instead it was C. Can someone explain?

Hey Lara! Please refer to my explanation of this question: IMAT 2015 Q33 [Cardiac Cycle] - #2 by AriHoresh

When the blood pressure in the left ventricle is greater than the aorta, the semilunar valve must open. I think there is a mistake in the question(?), A seems to be the correct one.

I thought the same, thanks Ari :blush: