###Rationale: A i.e. Primary Optic Atrophy

###Answer: OPTION A IS CORRECT.
###Question: Fundoscopy of a patient shows chalky white optic disc with well defined margins. Retinal vessels and surrounding retina appears normal. Which of the following is the most likely diagnosis:
###Options:
A. Primary Optic Atrophy
B. Post-neuritic secondary optic atrophy
C. Glaucomatous optic atrophy
D. Consecutive optic atrophy
