Listed following are several stars found in the disk and halo of the Milky Way Galaxy. Assume that both the blue and yellow disk stars are members of the same open cluster. Rank the stars based on the abundance of elements heavier than carbon that you would expect to find in each of the stars, from highest to lowest. If you expect two (or more) stars to have approximately the same abundance, rank them as equal by writing them parallel to one another.
(a) hot, blue mains sequence star in open cluster in disk.
(b) red main sequence star in globular cluster M13
(c) yellow main sequence star in open cluster in disk.
(d) red giant in globular cluster M13.