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: Surgery
[{'content': 'In tracheostomy, the entry into the trachea is through the: \nSelect and explain. \nA. Cricoid cartilage, B. First tracheal ring, C. Second and third tracheal ring, D. Fourth and fifth tracheal ring', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]