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 of the following contains primer and bonding agent in a single bottle and is known as "single component system" 
Select and explain. 
A. 3rd generation, B. 4th generation, C. 5th generation, D. 6th generation
C: 5th generation
Answer: C: 5th generation 
Explanation: None