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").

Example Input: A filament that is in a glass container will be this when a switch is flipped to cause glass to glow: (A) dark (B) toasty (C) cold (D) icy
Example Output: B

Example Input: The bear in the wild needs to find other animals to feast. (A) they are killers (B) they only eat (C) they never kill (D) they are docile
Example Output: A

Example Input: What is an example of protecting the environment? (A) flushing the toilet twice (B) using water flow limiter (C) driving shorter trips more often (D) using fancy, more expensive paper
Example Output:
B