The distance from Earth to the North Star is about 430 light-years. Which of the following statements describes why scientists use the light-year unit to measure distance in space?

A.) A light-year is very small and distance in space are very small

B.) A light-year unit is very small and the distance in space are very large

C.) A light-year unit is very large and distance in space are very small

D.) A light-year unit is very large and distance in space are very large