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: A shoe seems gold and green at first, then at second glance looks blue and silver. This could be due to (A) interrogation (B) comas (C) refractions (D) cellulite

Output: C


Input: Consider Input: If someone wants to use a natural gas in order to assist something necessary, they can (A) use it to bathe in (B) eat it to die quickly (C) freeze it to make ice cubes (D) ignite it to warm their body

Output: D


Input: Consider Input: which of these usually occur over the shortest period? (A) a super size earthquake (B) a torrential rain fall (C) all of these (D) the eruption of a volcano


Output: A