[单选题]
If a person's eyeball 4h q+rmbwvy fc;x/b*0 is toozhj-:x /6wcvlonv .cue7x, w) long from front to back, the person is likely to suffer fro-)xc7 venw clu. 6wzh:x/o ,jvm
A. spherical aberration.
B. nearsightedness.
C. farsightedness.
D. astigmatism.