The given graph shows pressure changes in the left side of the heart during a single heart beat

Between points W and X, which of the following valves are open or closed respectively ?

Options

A. `{:("Atrio-ventricular valves Semilunar valves"),(" Closed Closed"):}`
B. `{:("Atrio-ventricular valves Semilunar valves"),(" Closed Open"):}`
C. `{:("Atrio-ventricular valves Semilunar valves"),(" Open Closed"):}`
D. `{:("Atrio-ventricular valves Semilunar valves"),(" Open Open"):}`

Answer

B