This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Physical sign of severe aortic stenosis is: 
Select and explain. 
A. A late peaking holosystolic murmur, B. A delayed carotid upstroke, C. A diastolic rumble, D. An opening snap
B: A delayed carotid upstroke
Answer: B: A delayed carotid upstroke 
Explanation: None