This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
S, ejection click & severe pulmonary stenosis relation is- 
Select and explain. 
A. In severe pulmonary stenosis gap increases, B. In severe pulmonary stenosis gap reduces, C. In severe pulmonary stenosis no change, D. In severe pulmonary stenosis ejection cttek comes_before
B: In severe pulmonary stenosis gap reduces
Answer: B: In severe pulmonary stenosis gap reduces 
Explanation: Mechanism of inspiratory softening of the pulmonary ejection click. Left-sided ejection clicks occur in the presence of a dilated aoa or aoic valve abnormalities. Ejection clicks occur with flexibly stenotic aoic valves and with nonstenotic bicuspid aoic valves.gap reduces in severe pul monary stenosis Ref Davidson 23rd edition pg 453