. Which of the following statements about comets and asteroids is true?
A. Comets are made up rock while asteroids are made of ice and dust.
B. Comets are balls of ice and dust while asteroids are made up of rocks.
C. Asteroids are highly elliptical in orbit while comets are rounded in orbit
D. Asteroids originated in Kuiper Belt and Oort Cloud while comets originated in the asteroid belt.

correct answer please​