Using the Hertzsprung-Russell Diagram in Figure 10-7 of Comins,Discovering the Essential

Multiple Choice

Using the Hertzsprung-Russell diagram in Figure 10-7 of Comins,Discovering the Essential Universe,6th ed.,and the mass-luminosity relationship for main-sequence stars shown in Figure 10-14,which list is the CORRECT sequence of stars in increasing order of mass?

A) Regulus, Barnard's Star, Sun, Altair
B) Barnard's Star, Altair, Sun, Regulus
C) Barnard's Star, Sun, Altair, Regulus
D) Regulus, Altair, Sun, Barnard's Star