This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Anatomy
[{'content': 'All are cerebral neurotics except \nSelect and explain. \nA. Opioids, B. Alcohol, C. Nux vomica, D. Cannabis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Neurotics: Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 399', 'role': 'assistant'}]