Question about Star Clusters?

I'm in an astronomy class and on one of our practice exams, this question came up. I can't seem to find it in the lecture notes or in the book. Anyone have any idea? Star cluster A is 10 billion years old and star cluster B is one million years old. At birth they had the same mass. Which statement is... show more I'm in an astronomy class and on one of our practice exams, this question came up. I can't seem to find it in the lecture notes or in the book. Anyone have any idea?

Star cluster A is 10 billion years old and star cluster B is one million years old. At birth they had the same mass. Which statement is correct?

A. A contains more massive stars than B

B. B contains more white dwarf stars than A

C. A is bluer than B

D. A is more luminous than B

E. A contains more red giant stars than B
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