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': 'During foetal lite maximum growth is caused by : \nSelect and explain. \nA. Growth harmone, B. Insulin, C. Coisol, D. Thyroxin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Insulin', 'role': 'assistant'}]