[单选题]
An object moves in a dire h,g*.z*huz :1p(srwo*spflg ction parallel to its length with a v96xd qi jn5dk*elocity that approaches tnxi d5*kj 9qd6he velocity of light. The length of this object, as measured by a stationary observer,
A. approaches infinity.
B. approaches zero.
C. increases slightly.
D. does not change.
