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: Pathology
[{'content': 'In CLL basically which cell predominates ? \nSelect and explain. \nA. T cell, B. B cell, C. Lymphocyte, D. Monocyte', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., B cell [", 'role': 'assistant'}]