A Comparison of an Elliptical Galaxy and a Spiral Galaxy

Multiple Choice

A comparison of an elliptical galaxy and a spiral galaxy of the same mass a billion years after both began formation would show that

A) they should each have about the same number of stars.
B) the elliptical galaxy will have formed more stars than the spiral galaxy.
C) the spiral galaxy will have formed more stars than the elliptical.
D) neither galaxy will have formed any stars during the first billion years.