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
[{'content': 'In infant (full term) diameter (mm) length (cm) of ETT used are – \nSelect and explain. \nA. 3.5,16, B. 7,12, C. 3.5,12, D. 7, 10', 'role': 'user'}, {'content': 'Answer: C \nExplanation: For full term infant, oral tracheal tube should have internal diameter of 3.5 mm and a length of 12 cm.', 'role': 'assistant'}]