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: Medicine
[{'content': 'A 36 year old male with Cavitatory Lung lesions, Sinusitis, Ulcers in the mouth. RBC casts in the urine can be seen. Diagnosis is \nSelect and explain. \nA. Granulomatosis with polyganitis, B. Eosinophilic with Polyangitis, C. IgA Vasculitis, D. Microscopic polyangitis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Wegener's also called Granulomatosis with polyangitis.", 'role': 'assistant'}]