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: Biochemistry
[{'content': 'Lipogenesis in liver is stimulated by \nSelect and explain. \nA. Glucagon, B. Insulin, C. Thyroxine, D. Epinephrine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Insulin', 'role': 'assistant'}]