This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Back region, Subject name: Anatomy
Transverse ligament of atlas is pa of: 
Select and explain. 
A. Cruciform ligament, B. Ligamenta flava, C. Anterior longitudinal ligament, D. Posterior longitudinal ligament
A: Cruciform ligament
Answer: A: Cruciform ligament 
Explanation: Transverse ligament forms the horizontal pa of cruciform ligament.