In the cardiac cycle, identify the correct sequence of events during ventricular systole:
- AVentricular contraction begins → closure of AV valves → opening of semilunar valves → blood ejected into aorta and pulmonary artery
- BOpening of semilunar valves → ventricular contraction → closure of AV valves → blood ejected
- CClosure of AV valves → ventricular contraction begins → blood ejected into aorta and pulmonary artery → opening of semilunar valves
- DVentricular contraction begins → opening of semilunar valves → closure of AV valves → blood ejected into aorta and pulmonary artery
✓ Correct answer: A
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