Which bodies are composed primarily of rock and metal?

A) comets and stars

B) stars and meteors

C) comets and asteroids

D) asteroids and meteors

Asteroid and meteors are essentially made of rock and metal. An Asteroid contains nickel - iron which is metal and stony materials which are rock. Meteors also contain iron-nickel and stony minerals which convert into rock. In effect then, these two are composed of rock and metals