What Is One Reason We Cannot Clearly Read Text That

What is one reason we cannot clearly read text that we are not focused on?

A) Cones, which contribute to color vision, are more concentrated in the fovea.
B) Light is not projected fully on the periphery of vision, making it difficult to see text.
C) Photoreceptor density falls off sharply in the periphery of vision, making it difficult to distinguish patterns like text.
D) Rods, which enable us to distinguish patterns of text, are highly concentrated in the fovea.
E) Our perception of peripheral images is not as detailed as foveal images because of higher-order processing.