This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'Histamine release is one of the common features with administration of \nSelect and explain. \nA. Atracurium, B. Adrenaline, C. Thiopentone, D. Ketamine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: histamine is released by atracurium , all skeletal musle relaxants release histamine other drugs releasing histamine are morphine,vancomycin etc. Ref: kd tRipathi 8th ed.', 'role': 'assistant'}]