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: Medicine
[{'content': 'ELISA test for AIDS is- \nSelect and explain. \nA. More sensitive but less specific, B. More specific but less sensitive, C. Highly sensitive and specific, D. Neither specific nor sensitive', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]