This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Pain in inflammation is mediated by \nSelect and explain. \nA. Histamine and nitric oxide, B. Prostaglandins and interleukins, C. Interferons and free radicals, D. Prostaglandins and bradykinins', 'role': 'user'}, {'content': 'Answer: D \nExplanation: <img src=" /> ref robbins 9th ed, page 90, tab3.7', 'role': 'assistant'}]