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
Rugae area is a 
Select and explain. 
A. Primary stress bearing area, B. Secondary stress bearing area, C. Relief area, D. None of the above
B: Secondary stress bearing area
Answer: B: Secondary stress bearing area 
Explanation: In the area of rugae, the palate is set to an angle and is covered by thin tissue, making it a secondary stress bearing area.