This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuromuscular Blocker, Subject name: Anaesthesia
Which of the following non depolarizing neuromuscular blocker does not release histamine:- 
Select and explain. 
A. Vecuronium, B. d-tubocurarine, C. Atracurium, D. Mivacurium
A: Vecuronium
Answer: A: Vecuronium 
Explanation: Aminosteroid group of non-depolarizing neuromuscular blocker does not release histamine Benzylisoquinoline release histamine in following sequence d-tubocurare >>> atracurium = mivacurium > doxacurium Erythema, flushing, and hypotension are manifestations of histamine release.