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': 'Symptoms of opioid withdrawal are all, EXCEPT: \nSelect and explain. \nA. Polyuria, B. Yawning, C. Fever, D. Insomnia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Opioid withdrawal syndrome may resemble a severe flu-like illness. The syndrome is characterized by rhinorrhea, sneezing, yawning, lacrimation, abdominal cramping, leg cramping, piloerection (gooseflesh), nausea, vomiting, diarrhea, dilated pupils, fever, and insomnia. Heroin and methadone withdrawal symptoms peak in 36-72 hours and 72-96 hours, respectively, and may last for 7-10 days and at least 14 days, respectively.', 'role': 'assistant'}]