Which clinical signs are characteristic of aortic regurgitation?
a) DeMusset sign (head bobbing) and brisk carotid upstroke
b) Wide pulse pressure (>40 mmHg) and "Water-Hammer" pulse
c) Brisk carotid upstroke and wide pulse pressure (>40 mmHg)
d) "Water-Hammer" pulse and DeMusset sign (head bobbing)