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 25 years old female develops serous otitis media of left ear with cough, occasional hemoptysis, hematuria and epistaxis for one & half months. Her hemoglobin is 7 gm, BP- 170/100, proteinuria +++, RA -ve and ANCA -ve. The likely cause is - \nSelect and explain. \nA. Wegener's granulomatosis, B. Rheumatoid arthritis, C. Rapidly proliferative glomerulonephritis, D. Good pasteur's syndrome", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]