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: Gynaecology & Obstetrics
[{'content': 'Commonest congenital malformation in infant of a diabetic mother is : \nSelect and explain. \nA. Neural tube defect, B. Hydrocephalus, C. Anencephaly, D. Sacral agenesis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is a/c i.e. Neural tube defect / Anencephaly', 'role': 'assistant'}]