A Patient Has a Cardiac Murmur That Peaks in Mid-Systole

A patient has a cardiac murmur that peaks in mid-systole and is best heard along the left sternal border. The provider determines that the murmur decreases in intensity when the patient changes from standing to squatting and increases in intensity with the Valsalva maneuver. Which will the provider suspect is causing this murmur?

A) Aortic stenosis
B) Hypertrophic cardiomyopathy
C) Mitral valve prolapse
D) Tricuspid regurgitation