The correct options are
A Meteors are rocky pieces that originate from the asteroid belt.
B When meteors do not burn completely and fall on the surface of the earth, they are called meteorites.
C Asteroid belt in solar system is found between the orbits of Mars and Jupiter.
Asteroids are made up of rocky material and metals. An asteroid becomes a meteor when it enters the earth's atmosphere. If a meteor does not burn out before reaching the earth's surface, it is called a meteorite.
Comets are made up of ice and dust and have highly elliptical orbits (they can get very close or far to the sun in its orbit).
Clearly, comets and asteroids are not very much similar.