Astronomers Were Surprised to Find So Many Jupiter-Mass Planets So

Multiple Choice

Astronomers were surprised to find so many Jupiter-mass planets so close to their stars. According to their best theories and models, such "hot Jupiters"

A) must have formed close to their stars, but only billions of years after the star formed
B) must have been captured from a passing star that got very close
C) must be falling into their stars and will soon be vaporized
D) must have formed further out from the star and must have "migrated inward" early on
E) are absolutely impossible, so they must be mistaken observations