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: Biochemistry
[{'content': 'Stimulates the synthesis of milk proteins. \nSelect and explain. \nA. LH, B. PRL, C. TSH, D. GH', 'role': 'user'}, {'content': 'Answer: B \nExplanation: PRL is the only hormone listed that stimulates the synthesis of milk proteins. PRL will induce a-lactalbumin, which will stimulate lactose production.', 'role': 'assistant'}]