At first few month after birth and when a person is young ,what happens to a person's eyes according to the text?
A.
He is long-sighted; his two eye are not cooperated and he sees clearly in dim light.
B.
His mother always worries that he will ruin his eyes because he likes to read in dim light.
C.
His eyes can see clearly in bright light and the two eye can move in exact unison.
D.
The vision of his eyes reaches the best point when a person is at the age of six.