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
All except one is true regarding murmur heard in hypertrophic obstructive  cardiomyopathy 
Select and explain. 
A. 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
C: Systolic murmur increases with hand grip
Answer: C: Systolic murmur increases with hand grip 
Explanation: Murmur in HOCM decreases with handgrip
DYNAMIC CARDIAC ASCULTATION
Effect of Murmurs.