Which of the following best describes an incompetent (regurgitant, insufficient) aortic valve?
A) It fails to open properly during diastole, impeding blood flow into the aorta.
B) It fails to close properly during diastole, allowing blood to leak back into the left ventricle.
C) It fails to open properly during systole, impeding blood flow from the left ventricle into the aorta.
D) It fails to close properly during systole, allowing blood to leak back into the left atrium.