Use the information provided below about three main-sequence stars (A, B, and C) and Figure 16.4 to.

Use the information provided below about three main-sequence
stars (A, B, and C) and Figure 16.4 to complete and explain your reasoning for the
following:

• Star A has a main-sequence life span of 5 billion years.

• Star B has the same luminosity (absolute magnitude) as the
Sun.

• Star C has a surface temperature of 5000 K.

a. Rank the mass of these stars from greatest to least.

b. Rank the energy output of these stars from greatest to
least.

c. Rank the main-sequence life span of these stars from
longest to shortest.