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': 'Osteoporosis in menopause typically affects \nSelect and explain. \nA. Compact bone, B. Trabecular bone, C. Metaphysis, D. Periosteum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Osteoporosis in menopause typically affects tracbecular bone.', 'role': 'assistant'}]