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': "Most common Morphological difference between Ulcerative Colitis and Crohn's disease \nSelect and explain. \nA. Mucosal edema, B. Crypt abscess, C. Diffuse polyps, D. Lymphoid aggregates", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref:- Bailey and Love 27th Edition; Pg num:- 1268', 'role': 'assistant'}]