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': 'False about secondary immune response \nSelect and explain. \nA. Immune response against subsequent antigenic challenge, B. No Negative phase, C. Only T dependent antigens are processed, D. Lag period is absent or short', 'role': 'user'}, {'content': 'Answer: B \nExplanation: There is a negative phase in secondary immune response.', 'role': 'assistant'}]