78. The correct sequence of the cardiac cycle in a healthy adult human is _____.(1. atrial systole and ventricular diastole 2. ventricular systole and atrial diastole 3. atrial and ventricular systole4.atrial and ventricular diastole)
(A) 1  3  2
(B) 4  1  2
(C) 4  2  1
(D) 2  4  3
(E) 1  4  3