Please help
Star three is 138 light years away from Star 1 and 75 light years away from Star 2. Which of these conclusions about the stars is correct?
Star 2 is 213 miles away from Star 3
Star 2 is 63 kilometers away from Star 3
The light from Star 2 reaches Star 1 in 63 years
The light from Star 2 reaches Star 1 in 213 years