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
A patient presents with respiratory symptoms, i.e. cough, hemoptysis and glomerulonephritis. His c-ANCA levels in serum were found to be raised. The most likely diagnosis is 
Select and explain. 
A. Goodpasture’s syndrome, B. Classic polyarteritis nodosa, C. Kawasaki’s syndrome, D. Wegener’s granulomatosis
D: Wegener’s granulomatosis
Answer: D: Wegener’s granulomatosis 
Explanation: • Both Wegener’s granulomatosis and Goodpasture’s syndrome can present similarly but presence of c-ANCA makes a diagnosis of Wegener’s granulomatosis.