[单选题]
The appearance of the great range of brighe 6v 6pon:ojt *,h ugron:1sc(tness among starvnxhy .e1)w1 -mp0 rh6.rssqls is due to
A. the differences in the amount of light different stars emit.
B. the differences in the distances of stars from us.
C. both of the given answers
D. none of the given answers
