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
The ridge that descends from the cuspal tip towards the central part of the occlusal surface in a maxillary molar is 
Select and explain. 
A. Triangular ridge, B. Marginal ridge, C. Transverse ridge, D. Oblique ridge
A: Triangular ridge
Answer: A: Triangular ridge 
Explanation: None