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: Anaesthesia
Best scale to measure pain in children of 5 years age would be – 
Select and explain. 
A. VAS, B. Mc Gill scale, C. Faces scale, D. CHEOPS
D: CHEOPS
Answer: D: CHEOPS 
Explanation: For children (1-7 years) CHEOPS scale is used.