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: Physiology
Second order neuron in optic pathway 
Select and explain. 
A. Optic nerve, B. Medial geniculate body, C. Lateral geniculate body, D. Layer of retina
A: Optic nerve
Answer: A: Optic nerve 
Explanation: Visual pathway

Receptors- Rods & Cons
First order neurons- Bipolar cell axons (In retina)
Second order neurons- Ganglion cell axons ( In optic disc, optic nerve, optic chiasma, optic tracts)
Third order neurons- Lateral geniculate body nerve cell axons (optic radiation)