When a Molecular Cloud Fragments

When a molecular cloud fragments,

A) the least massive stars are the first to form, while the most massive stars take longer.
B) the most massive star are the first to form, while the least massive stars take longer.
C) the most massive stars promptly explode as supernovae, removing all remaining gas.
D) the stars form at the same rate, regardless of their mass.
E) interstellar dust is generated, but not stars.