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
Diabetic gangrene is due to: March 2004 
Select and explain. 
A. Ischemia, B. Increased blood glucose, C. Altered host defence and neuropathy, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. D i.e. All of the above