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': 'Direct endothelial injury to the venules, capillaries and arterioles, as a mechanism of increased vascular permeability in inflammatory process is \nSelect and explain. \nA. Immediate transient response, B. Immediate sustained response, C. Endothelial cell retraction, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]