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: Dental
The vascular supply of the periodontal ligament is: 
Select and explain. 
A. Greatest in the middle-third of a single rooted tooth, B. Greatest in the middle-third of a multirooted tooth, C. A net-like plexus that runs closer to the cementum than to the bone, D. A net-like plexus that runs closer to the bone than to the cementum
D: A net-like plexus that runs closer to the bone than to the cementum
Answer: D: A net-like plexus that runs closer to the bone than to the cementum 
Explanation: None