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
Cervical veebra is differentiated from the thoracic veebra by the presence of: 
Select and explain. 
A. Large veebral body, B. Upward facing superior facets, C. Triangular foramin, D. Foramen transversarium
D: Foramen transversarium
Answer: D: Foramen transversarium 
Explanation: D i.e. Foramen transversurism