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': 'Which of the following murmurs increase with valsalva maneovre \nSelect and explain. \nA. Mitral stenosis, B. HOCM, C. Mitral Regurgitation, D. Aoic stenosis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Answer is B (HOCM) Murmur of HOCM typically increases with Valsalva maneuver. 'Most murmurs decrease in length and intensity with Valsalva Maneuver. Two exceptions are the systolic murmur of HOCM which usually becomes much louder and that of MVP which becomes longer and often louder' -- Harrison", 'role': 'assistant'}]