[单选题]
If a person's eyeball ixt44t;7 : )jmpypj vj4yq7 )ct ;egvzjs too long from front t)qb3z nqdr 1j -s7nnp0o back, the person is likely to sufsqrn)djb-n3 07 znp1qfer from
A. spherical aberration.
B. nearsightedness.
C. farsightedness.
D. astigmatism.