Which statements about the formation of the solar system are true and in a correct order?


A.

A black hole collapsed to form the sun; small planetary objects formed; small planetary objects collided with each other to form larger objects.


B.

Most of the dust and gas contracted into a central mass—the Sun; half the mass of the cloud condensed to form Jupiter; asteroids and comets crashed into the sun to form the smaller planets.


C.

A spinning cloud of dust began to compress to form the sun; small planetary objects formed; hydrogen and helium became concentrated in the outer solar system to form the outer planets.


D.

Gravitational force held the newly formed planets around the sun; small planetary objects formed; hydrogen and helium became concentrated in the outer solar system to form the outer planets.