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 occlusal outline of the permanent mandibular first molar is usually similar to 
Select and explain. 
A. Circle, B. Square, C. Trapezoid, D. Parallelogram
C: Trapezoid
Answer: C: Trapezoid 
Explanation: None