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: Unknown
[{'content': 'Features of innate immunity A/E - \nSelect and explain. \nA. Recognizes foreign antigen in blood, B. C reactive protein, C. Complement protein is a part of innate immune system, D. Includes phagocytes and natural killer & cellf', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans-A', 'role': 'assistant'}]