This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social Science, Mental Health & Genetics, Subject name: Social & Preventive Medicine
Mild mental retardation is defined when IQ is- 
Select and explain. 
A. 50-70, B. 35-49, C. 20-34, D. <20
A: 50-70
Answer: A: 50-70 
Explanation: Ans. is 'a' i.e., 50-70 CategoryIQMild50-70Moderate35-49Severe20-34Profound<20