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: Psychiatry
[{'content': 'Kallu a 22 years old male suffers from decreased sleep, increased sexual activity, excitement and spending excessive money for last 8 days. The diagnosis is: \nSelect and explain. \nA. Confusion, B. Disorientation, C. Hyperactivity, D. Loss of memory', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Hyperactivity', 'role': 'assistant'}]