This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Which of the following causative factors is not involved in the pathogenesis of Diabetic gangrene? NOT RELATED - MEDICINE 
Select and explain. 
A. Infection, B. Myelopathy, C. Atherosclerosis, D. Osteoahropathy
B: Myelopathy
Answer: B: Myelopathy 
Explanation: Others Are Neuropathy, Microangiopathy, Glycosylation Of Hb And Proteins, Hyperglycemia