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: ENT
[{'content': 'The danger space in front of prevertebral fascia extends till \nSelect and explain. \nA. T4 vertebrae, B. T2 vertebrae, C. Diaphragm, D. Coccyx', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]