There are four valves in the heart: 1) bicuspid (mitral) 2) tricuspid 3) pulmonary semilunar 4) aortic semilunar What is the correct order in which blood flows through these valves, starting in the right atrium?
A) 1, 4, 2, 3 B) 1, 3, 2, 4 C) 2, 3, 1, 4 D) 2, 4, 1, 3