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
About lidocaine, all are true except : 
Select and explain. 
A. LA effect, B. Cardiac arrhythmia, C. Ester, D. Acts on mucous membranes
C: Ester
Answer: C: Ester 
Explanation: C i.e. Ester