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': 'Prepyloric or channel ulcer in the stomach is termed as - \nSelect and explain. \nA. type 1, B. type 2, C. type 3, D. type 4', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]