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: Pediatrics
Which heart diseases are most commonly associated with rubella infection – 
Select and explain. 
A. PDA, B. VSD, C. ASD, D. Eisemenger's syndrome
A: PDA
Answer: A: PDA 
Explanation: Patent ductus arteriosus is the most common congenital heart disease associated with rubella, followed by pulmonary artery stenosis.
Heart disease in congenital Rubella → PDA > PS > VSD > ASD.