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': "Type 1 gastric cancer according to Bormann's classification: \nSelect and explain. \nA. Protruding, B. Ulcerated, C. Flat, D. Excavated", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bormann Classification (Based on macroscopic appearance) Type I Polypoid or fungating cancers Type II Fungating & ulcerated with surrounded by elevated borders Type III Ulcerated lesions infiltrating the gastric wall Type IV Infiltrates diffusely (Linnitis plastic) Type V Unable to be classified', 'role': 'assistant'}]