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: What does gravity cause substances on a planet? (A) things to move sideways (B) things to be moved upwards (C) things to descend to the lowest surface possible (D) things to stay in the same place

Output: C


Input: Consider Input: A bear hibernates through cold weather because (A) bears get very tired (B) it is gestating young (C) resources are scarce in winter (D) winter is too cold

Output: C


Input: Consider Input: In the photosynthesis process what has the role of raw material? (A) water (B) CO2 (C) wind (D) dirt


Output: B