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: Anatomy
[{'content': 'Which is the most prominent spinous process ? \nSelect and explain. \nA. T1, B. C7, C. C6, D. L5', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The C7 vertebra is also known as the vertebra prominens because of its long spinous process.', 'role': 'assistant'}]