This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basic Concepts and Vascular changes of Acute Inflammation, Subject name: Pathology
[{'content': 'Negative acute phase reactant is: \nSelect and explain. \nA. C-reactive protein, B. Alpha-1 antitrypsin, C. Transferrin, D. Serum amyloid protein', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]