The reason why a comet is not seen as often as asteroids and meteors is because
a. comets are too black to be detected by telescopes.
b. it has no clear path and moves aimlessly around the planets.
c. their orbit is like a wave pattern that crisscross the planet's orbits in the solar system.
d. its orbit around the sun is very elliptical such that they move very close to the sun at one end
and stretched to the edge of the

correct answer please​