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
[{'content': 'All except one is true regarding murmur heard in hypertrophic obstructive  cardiomyopathy \nSelect and explain. \nA. Systolic murmur decreases on squatting, B. Systolic  murmur increases on valsalva manoeuvre, C. Systolic murmur increases with hand grip, D. Systolic murmur decreases on taking beta blocker', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Murmur in HOCM decreases with handgrip\nDYNAMIC CARDIAC ASCULTATION\nEffect of Murmurs.', 'role': 'assistant'}]