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 32 year old carpenter presented to you with history of recurrent attacks of chest pain . You prescribe him sublingual nitroglycerin  and advise him to take it at the time of pain. The patient revisits the hospital again after 2weeks and tells that the intensity of chest pain has increased on taking nitroglycerin.  The patient is most likely suffering from 
Select and explain. 
A. Aortic regurgitation, B. Hypertrophic obstructive  cardiomyopathy, C. Aortic dissection, D. Aortic aneurysm
B: Hypertrophic obstructive  cardiomyopathy
Answer: B: Hypertrophic obstructive  cardiomyopathy 
Explanation: Nitrates are vasodilator drugs which aggravate condition of HOCM , so it is generally not used in HOCM