This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nephrotic and Nephritic syndrome, Subject name: Medicine
First line treatment of RPGN is? 
Select and explain. 
A. Wait and watch, B. Sirolimus, C. Methylprednisolone, D. Plasma exchange
C: Methylprednisolone
Answer: C: Methylprednisolone 
Explanation: * For management of acute GN/ RPGN give 500-1000 mg methylprednisolone while awaiting biopsy results. * Consider plasmapheresis for fuher treatment based on underlying disease.