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': 'True about strychnine poisoning is : \nSelect and explain. \nA. All muscles affected at the same time, B. Shoulder girdle affected first, C. Pelvic girdle affected first, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. All muscles affected at same time', 'role': 'assistant'}]