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 young basketball player with ht 188 cm and armspan 197 cm has a diastolic murmur best heard in second right intercostal space : likely cause of murmur is - 
Select and explain. 
A. AS, B. Coarctation of aorta, C. AR, D. MR
C: AR
Answer: C: AR 
Explanation: None