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
The most likely diagnosis in the case of a patient with multiple pulmonary cavities, hematuria and red cell casts is 
Select and explain. 
A. Anti-GBM disease, B. Churg-Strauss, C. Systemic lupus erythematousus, D. Wegner's granulomatosis
D: Wegner's granulomatosis
Answer: D: Wegner's granulomatosis 
Explanation: Ans. is 'd' i.e., Wegner's granulomatosis