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: Medicine
[{'content': 'In male patients, genital TB preferentially affects which of the following? \nSelect and explain. \nA. Epididymis, B. Orchitis, C. Prostatitis, D. Penis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In male patients, genital TB preferentially affects the epididymis, orchitis and prostatitis may also develop. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 1347', 'role': 'assistant'}]