Of the Following, What Two Factors Result in Poor Fixation

Of the following, what two factors result in poor fixation, focusing, and coordination of eye movements?

A) Poorly developed lacrimal apparatus and too much rhodopsin and iodopsin
B) Rounded cornea and immature ocular muscles
C) Myopia and curvature of the eye
D) Ocular muscles that have not taken over reflexes, and rounded cornea
E) Incompletely developed fovea and incomplete ocular muscles