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
Which of the following passes through the foramen magnum - 
Select and explain. 
A. Vertebral Artery, B. Sympathetic chain, C. XIth cranial nerve, D. Internal carotid Artery
A: Vertebral Artery
Answer: A: Vertebral Artery 
Explanation: Structures passing through foramen magnum are :


Anterior part:- Apical ligament of dens, membrane tectoria, vertical band of the cruciate ligament.
Posterior part:- the Lowest part of the medulla oblongata, three meninges (dura, arachnoid and pia mater).
Subarachnoid space:- Spinal accessory nerves, vertebral artery and sympathetic plexus around it, posterior spinal arteries, anterior spinal arteries.