Sean enjoys studying the stars. he used a photometry tool to calculate several stars' apparent magnitudes (how bright a star looks in the sky). he then researched the stars' distances from earth. he recorded his results in the table below.

star
apparent
magnitude
distance from
earth
sirius a
-1.47
8.6 light-years
alpha centauri a
-0.01
4.4 light-years
rigel
0.12
770 light-years
procyon
0.34
11 light-years
alpha centauri b
1.33
4.4 light-years

what conclusions can sean draw from his chart?
a.
a star's apparent magnitude decreases if it is very close to another star.
b.
a star's apparent magnitude decreases as its distance from earth increases.
c.
a star's apparent magnitude is not directly related to its distance from earth.
d.
a star's apparent magnitude increases as its distance from earth increases.