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: Pathology
[{'content': 'What is the most impoant role of Bradykinin in acute inflammation? \nSelect and explain. \nA. Increase in Vascular Permeability, B. Vasodilatation, C. Mediation of Pain, D. Bronchoconstriction', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All the above mentioned choices are the actions of bradykinin in the body. Increase in vascular permeability is the best answer as it is the most impoant feature of acute inflammation. Ref: Pathology Medical Student, USMLE Board Pa I : Pearls of Wisdom By Cory A. Robes, Page 22; Robins Basic Pathology, 7th Edition, Page 45.', 'role': 'assistant'}]