Is my answer to this question correct? Are there small errors? "Q: Describe briefly how bodies in the Kuiper belt and the Oort cloud formed. A: The bodies in the Oort cloud cannot have been formed in their current locations. The solar nebula at 10,000-100,000 AU from the Sun would not have been dense enough to condense into the Oort cloud bodies. It is believed that the Oort cloud bodies originated as planetesimals near the Jovian planets. As the Jovian planets became massive and developed powerful gravitational fields, they swept up nearby planetesimals and ejected them from the plane of the Solar System into the spherical space around the Sun. This explanation would also account for the random orbits of the Oort cloud bodies: they were ejected in random directions.
The Kuiper belt bodies were originally formed within ~35 AU of the Sun on the plane of the Solar System. They were then swept into their current positions by the outward migration of Neptune. For this reason, some Kuiper belt objects (called Plutinos) are caught in a 3:2 resonance with Neptune.