instruction:
In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").
question:
Obstacles that might impede a dune are (A) God (B) emotions (C) cacti (D) cancers
answer:
C

question:
Jeff noticed that the big dipper was in a different spot in the sky at 2am than where it was at 10pm. Why? (A) because of the earth's orbit (B) the stars had rotated (C) Jeff had been instantly transported thousands of miles from where he'd been at 10pm. (D) the earth had turned
answer:
D

question:
Roads need repaved in spring because (A) they are cold (B) road need it (C) they are lumpy (D) ice ruins them
answer:
D