In general, what can be said about type O and B stars compared to type K and M stars?
A) They are hotter and younger.
B) They are cooler and older.
C) They are hotter and older.
D) They are cooler and younger.
E) They are neither hotter nor cooler, younger nor older.

Question

Quizplus · Accepted Answer

Type O and B stars are hotter and generally younger than type K and M stars. O and B stars have higher temperatures and burn their fuel much more quickly than cooler, longer-lived K and M stars.

In General, What Can Be Said About Type O and B