Choose the correct description of a comet.
(A). rocky bodies that ranging in size from a meter to 900 km orbiting between Mars and Jupiter
(B). concentrations of meteors called showers that the Earth passes through in its orbit annually
(C). a large meteor that appears as a fireball once it strikes the atmosphere with a tail
(D). bodies of ice and rock that orbit the Sun and produce a coma and tail of vapor and dust when near the Sun