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': 'Type 1 5α - reductase enzyme is found in all except \nSelect and explain. \nA. Skin, B. male genitalia, C. Brain, D. Liver', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Type 2 5 alpha reductase\xa0enzyme is expressed in male genitalia.', 'role': 'assistant'}]