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': 'Differential diagnosis of acute funicultitis with a small inguinal swelling is - \nSelect and explain. \nA. Undescended testes, B. Acute orchitis, C. Lymphadenitis, D. Small strangulated inguinal hernia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]