Which of the following does not lend support to the idea that Pluto is a Kuiper-belt object

A) Pluto has a cometlike composition and density.
B) Pluto is regarded by many to be a planet.
C) Some asteroids have their own moons.
D) Pluto has a more eccentric orbit than other planets.
E) Some known Kuiper-belt objects are hundreds of kilometers across.