This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach & Duodenum, Subject name: Surgery
[{'content': 'Commonest stomach tumor which bleeds: \nSelect and explain. \nA. Adenocarcinoma, B. Squamous carcinoma, C. Leiomyosarcoma, D. Fibrosarcoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) LeiomyosarcomaRef: Sabiston Page 1229, 20th Edition* Leiomyosarcoma is an old termno more used in stomach - Leiomyosarcomas are now renamed as GIST is the most common bleeding tumor cause in stomach.', 'role': 'assistant'}]