Consider star C, a measly 3000 K star, and star D, an impressive 9000 K star. Assuming they are about the same size, how do their luminosities compare?
A: Star D is 3 times as luminous as star C.
B: Star D is 4 times as luminous as star C.
C: Star D is 9 times as luminous as star C.
D: Star D is 16 times as luminous as star C.
E: Star D is 81 times as luminous as star C.
Ans: E: Star D is 81 times as luminous as star C.
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