Please choose the correct answer to the question: 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?

Answer1: Star X is larger than star Y. Answer2: Star Y is larger than star X. Answer3: Star X reflects the Sun’s light better than star Y. Answer4: Star Y reflects the Sun’s light better than star X.

Answer format: answer1/answer2/answer3/answer4