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: Sunlight is a source of (A) wind energy (B) warmth (C) frigid temperatures (D) moonlight

Output: B


Input: Consider Input: Plants derive what from soil? (A) pollination and germination (B) life sustaining substances (C) roots and oxygen (D) oxygen and argon

Output: B


Input: Consider Input: A bird can be saved in a harsh winter if it is driven to locate a (A) long metal rod (B) small tiger sanctuary (C) stocked provisions (D) easy dial phone


Output: C