This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Forensic Toxicology - Concepts, Statutes, Evidence, and Techniques, Subject name: Forensic Medicine
[{'content': 'Antidote for magnesium sulfate toxicity is? \nSelect and explain. \nA. Calcium gluconate, B. Penicillamine, C. Hydrated ferric oxide, D. Exchange resins', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Calcium gluconateRef. Harrison's 17le, Chapter 346", 'role': 'assistant'}]