This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Pediatrics
Continuous murmur is heard in? 
Select and explain. 
A. Patent ductus aeriosus, B. Ventricular septal defect, C. Atrial septal defect, D. Tetralogy of fallot
A: Patent ductus aeriosus
Answer: A: Patent ductus aeriosus 
Explanation: ALL OPTIONS: - PDA = Continuous murmur - VSD= Pansystolic murmur - ASD= Silent, wide fixed split of S2 is seen - TOF= Ejection Systolic Murmur