This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood disorders, Subject name: Psychiatry
[{'content': "Aaron Beck's cognitive triad of depression includes all except \nSelect and explain. \nA. Negative thought of self, B. Negative thought of future, C. Negative thought of friends, D. Negative thought of environment", 'role': 'user'}, {'content': "Answer: C \nExplanation: Negative thoughts about friends aren't included in triad.Environment, self and future -hopelessness, wohlessness, helplessness are only described as triad by Aaron Beck Ref: Essentials of postgraduate psychiatry By JN Vyas 1st ed Pg 604", 'role': 'assistant'}]