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: Social & Preventive Medicine
IQ level of 45 is called: September 2005 
Select and explain. 
A. Mild mental retardation, B. Moderate mental retardation, C. Severe mental retardation, D. Profound mental retardation
B: Moderate mental retardation
Answer: B: Moderate mental retardation 
Explanation: Ans. B i.e. Moderate mental retardation