Which statements about the formation of the solar system are true and in a correct order? a. a spinning cloud of dust began to compress; most of the gas and dust contracted into a central mass—the sun; small planetary objects formed. b. a spinning cloud of dust began to compress to form the sun; comets crashed into the sun to form the planets; gravitational force caused thin atmospheres in the outer planets. c. a black hole collapsed to form the sun; comets crashed into the sun to form the planets; gravitational force held the planets in orbit around the sun. 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 caused the outer planets to have thin atmospheres.