This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
[{'content': 'Holt Oram syndrome is characterized by \nSelect and explain. \nA. ASD, B. VSD, C. TGA, D. TAPVC', 'role': 'user'}, {'content': "Answer: A \nExplanation: Holt Oram syndrome:Hypoplastic or absent radii1st-degree hea blockASD(Refer: OP Ghai's Textbook of Pediatrics, 8th edition, pg no. 401)", 'role': 'assistant'}]