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 impacts an objects ability to reflect light? (A) color pallete (B) weights (C) height (D) smell

Output: A


Input: Consider Input: A thermal insulator slows the transfer of what? (A) warmness (B) light (C) energy (D) liquid

Output: A


Input: Consider Input: Reflectors are used to reflect light on (A) cardboard (B) paint (C) buses (D) birds


Output: C