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
Articular disc of TMJ is: 
Select and explain. 
A. Thickest posteriorly, B. Narrow in the centre, C. Strengthened by lateral pterygoid, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None