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

a.
asteroids crashed into the sun to form the inner planets; small planetary objects collided with each other to form larger objects; hydrogen and helium became concentrated in the outer planets, causing them to have large atmospheres.

b.
most of the dust and gas contracted into a central mass—the sun; small planetary objects formed; gravitational force held the newly formed planets in orbit around the sun.

c.
a black hole collapsed to form the sun; asteroids and comets crashed into the sun to form the planets; gravitational force caused thin atmospheres in the outer planets.

d.
a spinning cloud of dust began to compress to form the sun; half the mass of the cloud condensed to form jupiter; gravitational force held the planets in orbit around the sun.
i`m thinking it might be "b"?