Match the following Classification Of Cognitive Disability (Mental Retardation) with their range of intelligence quotient (IQ).

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Correct answer: (A) I-2, II-3, III-1
Explanation
Profound retardation is IQ below 20 (2), mild is 50-75 (3) and severe is 20-34 (1). So I-2, II-3, III-1.