An 8th Grade Boy Comes to the School Nurse and Tells

An 8th grade boy comes to the school nurse and tells the nurse that he had an eye exam the day before. He says the eye doctor told him he had astigmatism and that meant his eyeball wasn't shaped right. The boy is concerned because he says he went home and looked in the mirror and both eyes looked just alike. What is the school nurse's best response?

A) "Astigmatism means that the cornea of the eye is shaped differently than the cornea in most eyes."
B) "Astigmatism means that the eye is shaped more like an olive than most eyes."
C) "Astigmatism means that the inside of the eye is shaped differently than the inside of most eyes."
D) "Astigmatism means that the lens of the eye is more of an oval shape than the lens in most eyes."