This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mental Health, Subject name: Social & Preventive Medicine
'Moron' is one with an IQ of 
Select and explain. 
A. 0-24, B. 25-49, C. 50-69, D. 70-79
C: 50-69
Answer: C: 50-69 
Explanation: Levels of intelligence IQ range Idiot 0 - 24 Imbecile 25 - 49 Moron 50 - 69 Borderline 70 - 79 Low normal 80 - 89 Normal 90 - 109 Superior 110 - 119 Very superior 120 - 139 Near genius 140 and over