Stars on the Main Sequence Obey a Mass-Luminosity Relation

Multiple Choice

Stars on the main sequence obey a mass-luminosity relation. According to this relation,

A) the lower the mass, the higher the luminosity
B) if you double the mass, you get double the luminosity
C) luminosity is proportional to mass to the fourth power (luminosity increases strongly with mass)
D) bright stars have more mass around them in the form of planets, comets, and asteroids
E) the brightest stars are made of such light materials they hardly have any mass at all
Section 18.3: Diameters of Stars