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': 'Mantle cell Ca shows - \nSelect and explain. \nA. CD5 +, CD25 -, B. CD 5 +, CD 10 +, C. CD 5+, CD23+, D. CD 5+, CD 23 -', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mantle cell lymphoma is CD5 positive and CD23 negative.', 'role': 'assistant'}]