This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
[{'content': 'Bradycirdia is common after injection of: \nSelect and explain. \nA. Midazolam, B. Succinylcholine, C. Dopamine, D. Isoprenaline', 'role': 'user'}, {'content': 'Answer: B \nExplanation: KD thripathi. 7th edition. Chapter skeletal muscle relaxants. Page no. 351. Succinyl choline produces bradycardia initially after injection due to activation of vagal ganglia. So option 2 is right.', 'role': 'assistant'}]