Aortic insufficiency/regurgitation murmur is classified as a:

A. Systolic murmur: Systolic murmurs occur during systole and include conditions like aortic stenosis or mitral regurgitation. B. Diastolic murmur: Aortic insufficiency/regurgitation occurs during diastole when the aortic valve fails to close properly, allowing blood to flow back into the left ventricle. C. Absent murmur: Aortic insufficiency/regurgitation is not classified as absent; it is detectable with auscultation. D. Very faint murmur: Although aortic regurgitation murmurs can vary in intensity, the classification pertains to the timing of the murmur, not its loudness.