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: Microbiology
For spinal anesthesia, lignocaine is used as 
Select and explain. 
A. 0.5 % solution, B. 1 % solution, C. 2 % solution, D. 5% solution
D: 5% solution
Answer: D: 5% solution 
Explanation: Lignocaine is used as 5% (heavy) for spinal anaesthesia.