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
Dibucaine number is 
Select and explain. 
A. Gives percentage of lignocaine levels in blood, B. Gives percentage of abnormal pseudocholinesterase  in blood., C. Gives percentage of metabolised lignocaine levels, D. Gives percentage of succinylcholine in blood.
B: Gives percentage of abnormal pseudocholinesterase  in blood.
Answer: B: Gives percentage of abnormal pseudocholinesterase  in blood. 
Explanation: Dibucaine number gives percentage of abnormal pseudocholinesterase.