This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Substance Related and Addictive Disorders, Subject name: Psychiatry
[{'content': 'Which is not a feature of caffeine withdrawal? \nSelect and explain. \nA. Headache, B. Hallucinations, C. Depression, D. Weight gain', 'role': 'user'}, {'content': 'Answer: B \nExplanation: No hallucinations are seen in caffeine withdrawal. Effects of Caffeine Withdrawal : 1.Lethargy 2.Mild depression of mood 3.Increased appetite with slight weight gain 4.Fatigue 5.Headache', 'role': 'assistant'}]