We Know That Giant Stars Are Larger in Diameter Than

Multiple Choice

We know that giant stars are larger in diameter than the sun because

A) they are more luminous but have about the same temperature.
B) they are less luminous but have about the same temperature.
C) they are hotter but have about the same luminosity.
D) they are cooler but have about the same luminosity.
E) they have a larger absolute magnitude than the sun.