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 20-year-old woman presents with bilateral conductive deafness, palpable purpura on the legs and hemoptysis. Radiograph of the chest shows a thin-walled cavity in left lower zone. Investigations reveal total leukocyte count 12,000/mm red cell casts in the urine and 12,000/mm serum creatinine 3 ing/dL. What is the most probable diagnosis ? \nSelect and explain. \nA. Henoch-Schonlein purpura, B. Polyarteritis nodosa, C. Wegener's granulomatosis, D. Disseminated tuberculosis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]