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: Which of the following is never an element used to make carbohydrates for the plant? (A) sand (B) water (C) sunlight (D) carbon dioxide

Output: A


Input: Consider Input: A thing which moves very little over quite a lot of time is a (A) pack of wolves (B) racing horses (C) falling rocks (D) giant ice brick

Output: D


Input: Consider Input: A person in space will find a lack of something to drink if they land on (A) Mars (B) the earth (C) the moon (D) third planet


Output: C