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': 'According to Wechsler intelligence scale scoring, average IQ of a normal child is: \nSelect and explain. \nA. 50, B. 75, C. 90, D. 111', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c. 90', 'role': 'assistant'}]