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: Medicine
which of the following can be used to differentiate between diabetes mellitus type 1 and 2? 
Select and explain. 
A. Association with All 3/4, B. Presence or absence of insulitis, C. Insulin levels, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Answer- D. All the aboveAge- <20 yearsAutoimmune destruction of Beta cells mediated by T cells and humoral mediators. Anti islet cell antibodies.Islet cells- Early Insulitis, marked atrophy and fibrosis, Beta cell depletion.Marked decrease blood insulin.