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
Direct endothelial injury to the venules, capillaries and arterioles, as a mechanism of increased vascular permeability in inflammatory process is 
Select and explain. 
A. Immediate transient response, B. Immediate sustained response, C. Endothelial cell retraction, D. None of the above
B: Immediate sustained response
Answer: B: Immediate sustained response 
Explanation: None