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
Which among the following is a depolarising muscle relaxant? 
Select and explain. 
A. Decamethonium, B. D tubocurarine, C. Doxacurium, D. Atracurium
A: Decamethonium
Answer: A: Decamethonium 
Explanation: Ans. is 'a' i.e., Decamethonium Morgan 4th/e p. 214] See explanation-4 of session-3.