Why Was the Recent Discovery That Planets More Massive Than

Why was the recent discovery that planets more massive than Jupiter orbit nearby stars in small orbits surprising?

A) Because according to the nebular hypothesis, massive planets should only form away from their star.
B) The density of these planets is very high.
C) According to the nebular hypothesis, planets cannot be larger than Jupiter.
D) The nebular hypothesis predicts that close-in planets should have formed a second star.