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: when the needle of a compass lines up with Earth 's magnetic poles , the needle is (A) pointing east (B) pointing west (C) pointing at arctic (D) pointing to space
Example Output: C

Example Input: What does electrical energy become when a light bulb is turned on? (A) energy newly derived from radiation (B) energy derived from its motion (C) energy  that can be seen and used to see the matter around us (D) solar and wind energy
Example Output: C

Example Input: If steam chills then the vapor will (A) burn (B) melt (C) boil (D) thicken
Example Output:
D