How Do We Think the "Hot Jupiters" Around Other Stars

Multiple Choice

How do we think the "hot Jupiters" around other stars were formed?

A) They formed as gas giants close to the star in the same orbits that they are seen today.
B) They formed as dense,rocky planets close to the star in the same orbits that they are seen today.
C) They formed as gas giants beyond the frost line and then migrated inwards.
D) Many planets were formed around the star but coalesced into a single planet close in.
E) They spun off from the young star when it was rapidly rotating.