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
Minimal-change nephropathy -a) Is the commonest cause of the nephrotic syndrome in childhoodb) Does not relapse after remissionc) Produces highly selective proteinuriad) Does not cause depression of the serum complement levele) Must always be confirmed by renal biopsy 
Select and explain. 
A. abc, B. ad, C. acd, D. bde
C: acd
Answer: C: acd 
Explanation: None