Read the given statements and select the correct option w.r.t. true and false :
(a) Duration of each cardiac cycle is 0.8 seconds which can be altered in fear or fight conditions,
(b) Rapid passive ventricular filling takes place when auricles are in diastole and auriculoventricular valves remain closed,
(c) Semilunar valves open when intraventricular pressure exceeds the pressure within aorta,
(d) Sinoatrial node comprises of autoexcitable tissue.

Options

A. (a)-T,(b)-F,(C)-T, (d) -T
B. (a)-F,(b)-F,(C)-F, (d) -T
C. (a)-T,(b)-F,(C)-T, (d) -F
D. (a)-F,(b)-T,(C)-T, (d) -F