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: An exertion on a thing that is going against the thing's intended direction, when in motion will (A) melt it (B) oppose it (C) speed it up (D) burn it

Output: B

Input: Consider Input: Which is likely to provide an undesired acquired characteristic for an organism? (A) a light scratch on its leg (B) learning to leave the nest (C) finding a potential mate (D) dipping a foot in magma

Output: D

Input: Consider Input: A piece of talc is rolled over on a black chalkboard and (A) burns the board (B) wipes a spill (C) makes a streak (D) makes a dent
Output: C