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': 'Cervical veebra is differentiated from the thoracic veerbra by the presence of \nSelect and explain. \nA. Large veebral body, B. Upwards facing facets, C. Triangular for amina, D. Foramen transversarium', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. d. Foramen transversarium', 'role': 'assistant'}]