Here's a problem to solve: An astronomer is studying two stars that are the same distance from Earth. Star X appears brighter than star Y. Which statement best explains this observation?

Among the 4 following options, which is the correct answer?

- A: Star X is larger than star Y.
 
- B: Star Y is larger than star X.
 
- C: Star X reflects the Sun’s light better than star Y.
 
- D: Star Y reflects the Sun’s light better than star X.
 