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': 'Hypersensitivity vasculities seen in - \nSelect and explain. \nA. Capillaries, B. Arterioles, C. Post capillary venules, D. Medium sized vessels', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]