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
................ are fundamentally dual monocular
telescopes with side by side lenses convergent to focus on the operative field 
Select and explain. 
A. Loupes, B. Cameras, C. Spectacles, D. Lenses
A: Loupes
Answer: A: Loupes 
Explanation: None