This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mental Retardation, Subject name: Psychiatry
According to Wechsler intelligence scale scoring,average IQ of a normal child is: 
Select and explain. 
A. 50, B. 75, C. 90, D. 111
C: 90
Answer: C: 90 
Explanation: Ans. c. 90 (Ref: Niraj Ahuja 6/e p169: Kaplan & Sadock 9/e p980)According to Wechsler intelligence scale scoring, average IQ of a normal child is 90.Wechsler Intelligence ScaleIQ ScoreRange>_130Very superior120-129Superior110-119High average90-109Average80-89Low average70-79Borderline Stanford Binet ScaleIQ ScoreRange145-160Very gifted or highly advanced130-144Gifted or very advanced120-129Superior110-119High average90-109Average80-89Low average70-79Borderline impaired or delayed55-69Mildly impaired or delayed40-54Moderately impaired or delayed