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
A 68-year old man who has had a recent syncopal episode is hospitalized with congestive heart failure. His blood pressure is 160/80 mmHg. His pulse rate is 80 beats per minute, and there is a grade III/IV harsh systolic murmur. An echocardiogram shows a disproportionately thickened ventricular septum and systolic anterior motion of the mitral valve. Which of the following findings would most likely be present in this man - 
Select and explain. 
A. Radiation of the murmur to the neck., B. Decrease of the murmur with hand grip, C. Delayed carotid upstroke, D. Reduced left ventricular ejection fraction
B: Decrease of the murmur with hand grip
Answer: B: Decrease of the murmur with hand grip 
Explanation: None