Two Stars Are at Rest Relative to Each Other

Multiple Choice

Two stars are at rest relative to each other. A spaceship is moving between these two stars at 0.932c relative to each star. To someone in the ship, the distance between the two stars appears to be
26) 4 light-years. What is the distance between the stars in their own rest frame?

A) 72.8 light-years
B) 55.4 light-years
C) 9.57 light-years
D) 21.1 light-years