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': "Not a type of Inguinal hernia \nSelect and explain. \nA. Gibbon's hernia, B. Valpeall's hernia, C. Pantaloon's hernia, D. Sliding hernia", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]