The closest star to our solar system is Alpha Centauri, which is4.30 light years away. A spaceship with a constant speed of 0.800c relative to the Earthtravels 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