[单选题]
If a person's eyeball i /vv /(wg)izvwq / p9bcuwb:5i*meyv(s too shor14q.be9k43ofpei 1zy,n)cthm y ) ecct from front to back, the person is likely to suczcc1tpo4ny4)yh e mie 39k1.q b ),efffer from
A. astigmatism.
B. spherical aberration.
C. farsightedness.
D. nearsightedness.
