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").

Ex Input:
adding a direct flame to container of acid causes a (A) dormant cycle (B) lot of nothing (C) lower temperature (D) vapor expulsion

Ex Output:
D

Ex Input:
Rubber can protect from (A) cold (B) burns (C) electricity (D) fire

Ex Output:
C

Ex Input:
every four seasons a cedar expands it's (A) lung capacity (B) sight (C) vocal range (D) outer covering

Ex Output:
D