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
Contraindication of spinal anaesthesia is – 
Select and explain. 
A. Hypertension, B. Renal disease, C. Clotting disorders, D. Diabetes
C: Clotting disorders
Answer: C: Clotting disorders 
Explanation: None