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': '50 years old man present complaints of painful tender mass situated one third of the way between xiphisternum and umbilicus what is the likely diagnosis \nSelect and explain. \nA. Omphalocoele, B. Epigastric hernia, C. Spigelian hernia, D. Fibrosarcoma of abdominal walk', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]