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
TMJ is a type of: 
Select and explain. 
A. Secondary joint., B. Ginglino- Arthroidal joint., C. Synovial joint., D. All of the above.
D: All of the above.
Answer: D: All of the above. 
Explanation: Based on evolution TMJ is a secondary joint.
Has rotational and sliding movement hence Ginglino- Arthroidal joint.
It has articulation of 3 bones hence compound joint.