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': 'All are true about epigastric hernia except \nSelect and explain. \nA. Middles dump in the epigastric region, B. Cough impulse positac, C. Most common structure huniating is stomach, D. Confused with pain of peptic ulcer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: m/c structure huniating is pre - perituneal fat.', 'role': 'assistant'}]