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
Mutually protected occlusion; TRUE is 
Select and explain. 
A. Is an occlusal scheme in which the posterior teeth prevent excessive contact of the anterior teeth in maximum intercuspation, B. Posterior teeth function most effectively in stopping the mandible during closure, C. Anterior teeth function most effectively in guiding the mandible during eccentric movements, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None