This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pediatric Surgery, Subject name: Surgery
[{'content': 'Which of the following is the most common type of Tracheo-Esophageal fistula ? \nSelect and explain. \nA. Type A, B. Type B, C. Type C, D. Type D', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Classification of TEF: Type A: Atresia only (60%) Type B: Atresia with proximal TEF (2%) Type C: Atresia with distal TEF (85%): most common Type D: Atresia with both proximal and distal TEF (rare) Type E: TEF only (1%)', 'role': 'assistant'}]