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: Physiology
[{'content': 'Aromatase enzyme conves ? \nSelect and explain. \nA. Estrogen to androgen, B. Androgen to estrogen, C. Progesterone to estrogen, D. Androgen to progesterone', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Androgen to estrogen", 'role': 'assistant'}]