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: Unknown
[{'content': 'Which cervical vertebra that does not have a body or spinous process? \nSelect and explain. \nA. C1, B. C2, C. C3, D. C4', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Features of typical cervical, thoracic and lumbar vertebra are given below.', 'role': 'assistant'}]