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: Anaesthesia
Subarachnoid block as anaesthesia is contraindicated in – 
Select and explain. 
A. Diabetic gangrene, B. Burgers disease, C. Atherosclerotic gangrene, D. Hemophilia
D: Hemophilia
Answer: D: Hemophilia 
Explanation: Coagulopathy or bleeding disorders are absolute contraindications.