Answer:
The answer is A: ventricles are in systole
Explanation:
When the ventricular contraction begins for the outflow of blood to the great vessels, an increase in intraventricular pressure occurs, when it exceeds the pressure of the aorta on the left side and the pulmonary on the right, it results in the opening of the semilunar valves giving rise to the ejection of blood from the heart until the ventricles begin to relax. subsequently the valves are closed and another period of relaxation begins.
