This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'In tuberculosis of scrotal contents, first to get affected is ? \nSelect and explain. \nA. Testis, B. Epididymis, C. Rete testis, D. Vas deferens', 'role': 'user'}, {'content': "Answer: B \nExplanation: Tuberculosis : It involves mainly epididymis not testis and so ulcer/sinus occurs over the posterior aspect of the scrotum not in front. Secondary hydrocele develops in 30% cases. 60% will have renal tuberculosis. Reference : SRB's Manual of Surgery, 6th Edition, page no = 1075.", 'role': 'assistant'}]