This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
[{'content': 'Intrauterine growth of fetus is affected by \nSelect and explain. \nA. Growth hormone, B. Insulin, C. Thyroxine, D. Glucocoicoids', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Intrauterine growth of fetus is affected by insulinRef: Ganong&;s review of medical physiology; 24th edition; page no: 431', 'role': 'assistant'}]