[单选题]
The closest star to our solar:pg/uhfv3 m g( system is Alpha Centauri, which is xdky9bk*p5 /u4.30 light years away. A spaceship with a c9d/ky5 bp*ux konstant speed of 0.800c relative to the Earth travels toward the star. How much time would elapse on a clock on board the spaceship?
A. $3.23 \; y$
B. $4.40 \; y$
C. $5.15 \; y$
D. $5.38 \; y$