IQ=49: (A) Mild MR, (B) Moderate MR, (C) Severe MR, (D) Profound MR
Answer is B. WHO classification of Mental retardation(MR) mild MR...IQ 50-70 moderate MR ...35-49 severe MR..IQ 20-34 profound MR...IQ under 20 ref; (page no;637) 25th edition of PARK's textbook of Preventive and Social medicine