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
In tuberculosis of scrotal contents, first to get affected is ? 
Select and explain. 
A. Testis, B. Epididymis, C. Rete testis, D. Vas deferens
B: Epididymis
Answer: B: Epididymis 
Explanation: 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.