Task: Question Answering
Input (English): Why isn't there a planet where the asteroid belt is located?
(A)A planet once formed here but it was broken apart by a catastrophic collision. (B)There was not enough material in this part of the solar nebula to form a planet. (C)There was too much rocky material to form a terrestrial planet but not enough gaseous material to form a jovian planet. (D)Resonance with Jupiter prevented material from collecting together to form a planet.
Output (English): D