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: Microbiology
[{'content': 'Memory cells are: September 2004 \nSelect and explain. \nA. Basophils, B. Eosinophils, C. Lymphocytes, D. Neutrophils', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. Lymphocytes', 'role': 'assistant'}]