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: Surgery
[{'content': "Following sexual intercourse, a person develops pain in the left testes that does not get relieved on elevation of scrotum. Diagnosis is: \nSelect and explain. \nA. Epididymo-orchitis, B. Torsion testis, C. Fournier's gangrene, D. Tumor testes", 'role': 'user'}, {'content': "Answer: B \nExplanation: Elevation of testis reduces the pain in epididymo-orchiditis and makes it's worse in torsion of testis. Ref: Radiology Illustrated: Uroradiology By Seung Hyup Kim, 2012, page 910; Bailey and Love's Sho Practice of Surgery, 23rd Edition, Pages 1040, 1380.", 'role': 'assistant'}]