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
[{'content': 'All of the following about PDA are true except – \nSelect and explain. \nA. More common in males, B. Common heart lesion in rubella, C. Treatment is closure of defect by ligation and division of ductus, D. Hypoxia and immaturity are important in maintaining the patency', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]