This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diabetes mellitus and obesity, Subject name: Pediatrics
Screening for nephropathy in prepubeal children with type 1 DM should be initiated after how many years of disease onset? 
Select and explain. 
A. 2 years, B. 3 years, C. 4 years, D. 5 years
D: 5 years
Answer: D: 5 years 
Explanation: Annual screening of Nephropathy is considered in: Prepubeal - with duration of DM > 5yrs from onset Pubeal - with duration of DM > 2yrs from diagnosis