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
Size of periochip: 
Select and explain. 
A. 4×5×0.35mm, B. 3×4×0.35mm, C. 3×4×0.35mm, D. 4×5×0.35 mm
A: 4×5×0.35mm
Answer: A: 4×5×0.35mm 
Explanation: None