This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
Oldest component of lens of the eye is 
Select and explain. 
A. Anterior capsule, B. posterior capsule, C. Nucleo coical Junction, D. nucleus
D: nucleus
Answer: D: nucleus 
Explanation: Nulceus is the oldest pa of lens Refer Khurana 6th edition pg no191