I guess the answer is C, I am not sure please help

When it was determined that Sedna, the largest body in the Solar System to be discovered since Pluto, has a perihelion distance that is three times further out than Pluto and such an eccentric orbit that it has a period of thousands of years, it was placed in the

A) Rogue Comets.
B) Kirkwood Gap.
C) Oort Cloud.
D) Kuiper Belt.
E) Trojan Asteroids.

I guess the answer is c.

Thank You!

C) Oort Cloud.

"...In March 2004, a team of astronomers announced the discovery of a planet-like transneptunian object orbiting the sun at an extreme distance, in one of the coldest known regions of our solar system. The object (2003VB12), since named Sedna for an Inuit goddess who lives at the bottom of the frigid Arctic ocean, approaches the sun only briefly during its 10,500-year solar orbit. It never enters the Kuiper Belt, whose outer boundary region lies at about 55 AU -- instead, Sedna travels in a long, elliptical orbit between 76 and nearly 1,000 AU from the sun. Since Sedna's orbit takes it to such an extreme distance, its discoverers have suggested that it is the first observed body belonging to the inner Oort Cloud.
..."
http://solarsystem.nasa.gov/planets/prof…