Q.20.All of the following statements are true except:
A- A Bounding pulse can occur in severe aortic regurgitation
B- Pulsus alternans is defined by the beat-to-beat variability of the pulse amplitude
C- Pulsus parvus et tardus is a sign of severe aortic stenosis
D- A fall in systolic pressure of more than 10 mm Hg with inspiration is considered physiological DELL​