Select the correct statement about the heart valves. A) The mitral (bicuspid) valve separates the right atrium from the right ventricle. B) The tricuspid valve divides the left atrium from the left ventricle. C) Aortic and pulmonary semilunar valves control the flow of blood into the heart. D) The atrioventricular (AV) valves prevent backflow of blood into the atria during ventricular contraction.