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 year old woman presented with bilateral solid ovarian tumors, asitis and ulcerative growth in pyloric region of stomach. What is the preferred diagnosis \nSelect and explain. \nA. Carcinoma stomach, B. Ovarian cancer, C. Uterine cancer, D. Duodenal cancer', 'role': 'user'}, {'content': 'Answer: A \nExplanation: This is a case of carcinoma stomach with krukenberg tumor', 'role': 'assistant'}]