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: Ophthalmology
Equatorial diameter of the lens is – 
Select and explain. 
A. 7min, B. 8 mm, C. 9mm, D. 10 mm
D: 10 mm
Answer: D: 10 mm 
Explanation: Equatorial diameter of lens is 10 mm.