This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Platelets activating factor causes all except \nSelect and explain. \nA. Bronchoconstriction, B. Vasoconstriction, C. Decreased vascular permeability, D. Vasodilation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ref Robbins 8/e p60,9/e p73 PAFhas following inflammatory effects Platelets aggregation Vasoconstriction Bronchoconstriction', 'role': 'assistant'}]