Suppose Astronauts Are in a Spaceship Traveling Toward Earth at 95

Multiple Choice

Suppose astronauts are in a spaceship traveling toward Earth at 95% of the speed of light. Compared with when the ship was at rest on Mars, what length do the astronauts measure for their spaceship?

A) It cannot be determined; their life processes have slowed down too much for them to measure the length.
B) same
C) shorter
D) longer