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
In 1947 a committee at ADA recommended symbolically, which of the following tooth numbering system 
Select and explain. 
A. Zsigmondy/Palmer system, B. ADA system, C. Two digit system, D. Zsigmondy/Palmer system & ADA system
A: Zsigmondy/Palmer system
Answer: A: Zsigmondy/Palmer system 
Explanation: None