This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'Linitus plastic \nSelect and explain. \nA. Borrmann class I, B. Borrmann class II, C. Borrmann class III, D. Borrmann class IV', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Borrmann 1-single polypoidal carcinoma, Borrmann 2- ulcerated carcinoma with clear-cut margin, Borrmann 3-ulcerated carcinoma without clear-cut margin, Borrmann 4- diffuse carcinoma - linitis plastica. Reference ,SRB edition : 5 page:847', 'role': 'assistant'}]