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 rubber dam frame does not interfere while taking radiograph? 
Select and explain. 
A. Metal frame, B. Plastic frame, C. Young's frame, D. None of the above
B: Plastic frame
Answer: B: Plastic frame 
Explanation: Because it is shield-shaped and made up of radiolucent material.