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
Abnormal plasma choline esterase produces apnea due to which of the following – 
Select and explain. 
A. Halothane, B. Lignocaine, C. Suxamethonium, D. Isoflurane
C: Suxamethonium
Answer: C: Suxamethonium 
Explanation: Sch can cause dangerous hyperkalemia in patients with extensive soft tissue & muscle injury (crush injury) which may cause cardiac arrest.