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': 'Sulfonylurea is shifted to insulin in pregnant lady because : \nSelect and explain. \nA. Sulphonylurea causes PIH, B. Increases demands during pregnancy not compensated by sulfonyl urea alone, C. Insulin does not cross placenta, D. Sulfonylurea depletes insulin from fetus-beta cell of pancreas', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Insulin does not cross placenta', 'role': 'assistant'}]