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
Mandibular complete denture should cover retromolar pad because 
Select and explain. 
A. More surface area gives better retention, B. Provides border seal, C. Resists movement of denture base, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None