Which statement is not true?
A. During ventricular systole, the tricuspid valve is closed.
B. During ventricular systole, the atria are filling with blood.
C. During ventricular systole, the pulmonary semilunar valve is open.
D. During ventricular systole, the aortic semilunar valve is open.
E. During ventricular systole, the bicuspid valve is open.
Answer: E
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