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: Pediatrics
What is the size of iv cannula given below 
Select and explain. 
A. 20 G, B. 22 G, C. 24 G, D. 26 G
C: 24 G
Answer: C: 24 G 
Explanation: Colour of Cannula
Size of cannula


Green
18 G


Pink 
20 G


Blue
22 G


Yellow
24 G


Purple
26 G