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': 'Fetal growth is maximally affected by – \nSelect and explain. \nA. Insulin, B. Growth hormone, C. Cortisol, D. Thyroxine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Insulin and insulin like growth factor stimulate fetal growth.\nThyroxine has no effect on linear growth but it has effect on skeletal maturation.\nFetal or maternal GH is not essential for fetal growth in utero.', 'role': 'assistant'}]