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
Continuous murmur is found in -a) AS combined with ARb) Systemic A V fistulac) PDA with reversal of shuntd) Aortopulmonary windowe) Rupture of sinus valsalva 
Select and explain. 
A. abc, B. ade, C. bde, D. bce
C: bde
Answer: C: bde 
Explanation: None