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
[{'content': 'What is the size of iv cannula given below \nSelect and explain. \nA. 20 G, B. 22 G, C. 24 G, D. 26 G', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Colour of Cannula\nSize of cannula\n\n\nGreen\n18 G\n\n\nPink\xa0\n20 G\n\n\nBlue\n22 G\n\n\nYellow\n24 G\n\n\nPurple\n26 G', 'role': 'assistant'}]