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': 'Barium carbonate poisoning causes: NEET 13 \nSelect and explain. \nA. Respiratory distress, B. Gastrointestinal irritation, C. Muscular weakness, D. Cyanosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Muscular weakness', 'role': 'assistant'}]