Consider a large molecular cloud that will give birth to a cluster of stars. Which of the following would you expect to be true?
A) All the stars in the cluster will be of about the same mass.
B) A few massive stars will form, live, and die before the majority of the star's clusters even complete their protostar stage.
C) All the stars in the cluster will become main-sequence stars at about the same time.
D) All the stars in the cluster will have approximately the same luminosity and surface temperature.
Answer: B