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").

[EX Q]: Which is most harmful to a human? (A) dynamite going off (B) reading email (C) balloons popping (D) opening a soda
[EX A]: A

[EX Q]: As the pull of gravity decreases air molecules (A) explode (B) disperse (C) crowd together (D) party
[EX A]: B

[EX Q]: which of these students will see the teacher larger? (A) a boy sitting in front (B) a girl in the back (C) a boy outside the class (D) a girl in the middle
[EX A]:
A