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: Unknown
[{'content': 'A 3-year-old child presents with swelling in scrotum since birth. Transillumination test is positive. All are true except? \nSelect and explain. \nA. Herniotomy, B. Bag of worms, C. Silk glove sign, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (B) Bag of worms. image source;', 'role': 'assistant'}]