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': "In Wegener's granulomatosis cytoplasmic anti neutrophilic antibodies are directed against - \nSelect and explain. \nA. Proteinase 1, B. Proteinase 2, C. Proteinase 3, D. Proteinase 4", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]