Which statement about stars is correct
Star formation begins in a nebula.

G White dwarfs become main-sequence stars when they gain mass.

H .Supergiants are stars that can absorb black holes.

J .Main-sequence stars are formed by comets.
Star formation begins in a nebula.

G White dwarfs become main-sequence stars when they gain mass.

H. Supergiants are stars that can absorb black holes.

J .Main-sequence stars are formed by comets.