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
Upper 1st premolar resembles upper 2nd premolar from which aspect 
Select and explain. 
A. Buccal, B. Occlusal, C. Lingual, D. Proximal
C: Lingual
Answer: C: Lingual 
Explanation: None