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': 'Death in copper sulphate poisoning occurs due to: March 2003 \nSelect and explain. \nA. Renal failure, B. Cardiac arrest, C. Vascular collapse, D. Convulsions', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Renal failure', 'role': 'assistant'}]