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: Pediatrics
[{'content': 'The most common congenital cardiac abnormality associated with the maternal rubella infection during pregnancy is \nSelect and explain. \nA. Atrial septal defect, B. Patent ductus aeriosus, C. Ventricular septal defect, D. Coarctation of aoa', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Congenital rubella syndrome characterized by PDA,PS,VSD. Ref : Ghai essential of pediatrics, eighth edition ,p.no:401', 'role': 'assistant'}]