This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthesia, Subject name: Pharmacology
The neuromuscular blocker that does not need reversal of action by neostigmine at the end of the operation is: 
Select and explain. 
A. d-Tubocurarine, B. Doxacurium, C. Pipecuronium, D. Mivacurium
D: Mivacurium
Answer: D: Mivacurium 
Explanation: * Long acting non-depolarizing (competitive) NM blocking agents require reversal with neostigmine. * Mivacurium is the shoest acting NDMR. It does not require reversal due to its sho duration of action. * Mivacurium can be used in day care surgery.