[单选题]
As the speed of a particle approaches the speedmh ;hwkw 1ui)y uau;j2b1u +(ce81cqh of light, the momentum of the pa8uqcwhkub;2 ey1j aw)1(huhci;m +u1rgoyiu *j4i i .7h3ij)7hijr i 34)iu*g jiyo.rticle
A. increases.
B. decreases.
C. remains the same.
D. approaches zero.
