General Medicine General dc2f4e23 A 25-year-old man presents with acute, painless loss of vision in the right eye. The appearance of the optic nerve of the right eye is hyperemic. Of the entities listed, the most likely cause may include: A Vitamin BI2 deficiency B Ethambutol hydrochloride toxicity C Leber hereditary optic neuropathy (LHON) D Dominant optic atrophy