What Eventually Happens to a Comet When Its Orbit Brings

Multiple Choice

What eventually happens to a comet when its orbit brings it into the inner Solar System?

A) It builds up speed and increases its orbital period.
B) It is vaporized by the Sun, becoming inactive rock and dust.
C) It is pulled in by the gravitation forces of a Terrestrial planet.
D) It is blasted apart by asteroids within the asteroid belt.
E) It absorbs more ice and rock from asteroids within the asteroid belt.