Look at the graph below. will mark brainliest

a graph is shown with absolute brightness shown on y axis and surface temperature in degree celsius shown on x axis. the dwarf stars are shown along a slanting line from coordinates 30,000 and minus 3 to 10,000 and minus 4. the main sequence stars are shown along a slanting line from coordinates 20,000 and minus 2 to 2,000 and minus 6. the giants are shown along a line parallel to the x axis from coordinates 5,000 and 2 to 2,000 and 3. the supergiants are shown along a line parallel to the x axis from coordinates 7,500 and 4 to 2,500 and 4. point a has coordinates 20,000 and minus 4. point b has coordinates 2,500 and minus 4. point c has coordinates 5,000 and 2. point d has coordinates 7,000 and 4.

which of the following stars is most likely to be blue?

star a
star b
star c
star d