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
[{'content': 'In pseudo-cholinesterase deficiency, drug to be used cautiously is: \nSelect and explain. \nA. Barbiturate, B. Scoline, C. Halothane, D. Gallamine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Scoline', 'role': 'assistant'}]