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
The clinical use of which of the following drug is stopped because of severe bronchospasm associated with it- 
Select and explain. 
A. Rapacuronium, B. Rocuronium, C. Atracurium, D. Mivacurium
A: Rapacuronium
Answer: A: Rapacuronium 
Explanation: Rapacuronium is an aminosteroid compound that was introduced for clinical use in the limited states in 1999 and was withdrawn in 2001 because of rare, but severe, cases of bronchospasm.