Pressure-volume (PV) diagrams are widely used to characterize the performance of the intact heart under various conditions. For a particular cavity of the heart, the point at the bottom right of the loop is the end-diastolic point where the contraction begins. Moving counterclockwise around the loop, the opening and closing of the cavity's valves react to changes in pressure and volume. The upper left curve of the loop represents the end-systolic point. The PV diagram below was recorded for simultaneous contractions of the left (outer, larger loop) and right (inner, smaller loop) ventricles of the heart.What conclusion can be drawn about the behavior of the left and right ventricles under the tested conditions?