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").

Input: Consider Input: 2000 years ago, this method would likely have brought sand from the coast to the desert (A) the pyramids often eroded, making their own sand (B) constant breezes over time (C) human automobiles transfer materials (D) the space shuttle moved sand great distances

Output: B


Input: Consider Input: A rock may be used as a shelter by a (A) chicken (B) spider (C) giant squid (D) deer

Output: B


Input: Consider Input: If two blocks have unequal mass, which will speed up the most with a common force applied (A) neither move (B) The heavier (C) equal (D) The lighter


Output: D