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: Unknown
A 20-year-old woman has mild pulmonary stenosis. Which of the following statements regarding this situation is true? 
Select and explain. 
A. Heart size on chest x-ray is likely to be enlarged, B. Electrocardiogram is likely to be abnormal, C. There is loss of the jugular a wave, D. Compared to other valvular defects, the risk of endocarditis is relatively low
D: Compared to other valvular defects, the risk of endocarditis is relatively low
Answer: D: Compared to other valvular defects, the risk of endocarditis is relatively low 
Explanation: Adults with mild pulmonic stenosis are generally asymptomatic. Unlike congenital aortic stenosis, this condition usually does not progress; thus, follow-up need not be frequent. The risk of endocarditis is somewhat lower for pulmonic valves than for the other heart valves, whether normal or stenotic. Clinical signs of mild pulmonic stenosis include a prominent a wave on jugular venous pulse, a normal electrocardiogram, and normal cardiac size on chest x-ray.