This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitreous and retina, Subject name: Ophthalmology
How many mm from the limbus is the safest site of intravitreal injection? 
Select and explain. 
A. 1-2 mm, B. 2-3 mm, C. 3-4 mm, D. 4-5 mm
C: 3-4 mm
Answer: C: 3-4 mm 
Explanation: (Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 171)Intravitreal injection (distance from Limbus)For aphakics-3mmFor pseudophakes-3.5mmFor phakics-4mm