How are stars and comets different? A. A star has a solid rock and gas surface, while a comet has tail of dust and gas.

B. A star has a tail of dust and gas, while a comet has a solid rock surface.

C. A star is made up of burning gases, while a comet is made up of ice, gases, rocks, and dust.

D. A star is made up of ice, rocks, and dust, while a comet is made up of burning gases.