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
Most common type of lupus nephritis ? 
Select and explain. 
A. Memberanous, B. Mesangial, C. Focal proliferative, D. Diffuse proliferative
D: Diffuse proliferative
Answer: D: Diffuse proliferative 
Explanation: Ans. is `d' i.e., Diffuse proliferative