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: Forensic Medicine
[{'content': 'Antidote for oxalic acid poisoning: \nSelect and explain. \nA. BAL, B. Animal charcoal, C. Calcium gluconate, D. Magnesium', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Calcium gluconate', 'role': 'assistant'}]