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 type of resin tags contribute more to bonding: 
Select and explain. 
A. Micro resin tags, B. Nano resin tags, C. Macro resin tags, D. No effect of size of resin tags for bonding.
A: Micro resin tags
Answer: A: Micro resin tags 
Explanation: None