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: Pathology
[{'content': "Lymphocytic colitis \nSelect and explain. \nA. Bloody diarrhea, B. Intra epithelial lymphocytes, C. Lymphocytes is stools, D. Through Ileoscopy look for payer's patches", 'role': 'user'}, {'content': 'Answer: B \nExplanation: The characteristic feature of LC is an infiltration by lymphocytes into the colonic epithelium. Collagenous colitis (CC) shares this feature but additionally shows a distinctive thickening of the subepithelial collagen table. LC and CC have been suggested to represent different phases of a single pathophysiologic process, with LC possibly being a precursor or earlier phase of CC; however, this has not been proven. REFERANCE. MEDSCAP.COM IMAGE REF:', 'role': 'assistant'}]