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 is the source of cooling that turns lava into land? (A) seawater (B) refrigerators (C) air conditioning (D) glaciers

Output: A


Input: Consider Input: an area of low-lying ground near to a river is at risk of (A) over fishing (B) balloon landings (C) droughts (D) H20 accumulation

Output: D


Input: Consider Input: What requires nutrients to grow and heal, and use a bill type instrument to process them? (A) metals (B) dirt (C) birds (D) bear


Output: C