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: Pharmacology
Which of the following metabolite of Atracurium is responsible for seizures? 
Select and explain. 
A. Cis - atracurium, B. FK - 506, C. Laudanosine, D. Gallamine
C: Laudanosine
Answer: C: Laudanosine 
Explanation: Laudanosine is the metabolite of Atracurium that causes seizures. Cis - atracurium produces less laudanosine & hence has lesser risk of seizures.