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
Which molar has more than one occlusal forms 
Select and explain. 
A. Lower 1st molar, B. Lower 2nd molar, C. Lower 3rd molar, D. None of the above
A: Lower 1st molar
Answer: A: Lower 1st molar 
Explanation: None