instruction:
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").
question:
A source of heat may come from (A) a cold shower (B) holding hands (C) holding ice (D) Antartica
answer:
B


question:
An example of replacing a natural resource like copper might be (A) recovering ores (B) running around (C) throwing up (D) using plastic straws
answer:
A


question:
A coal mine is what? (A) a person who mines for coal (B) a rare type of stone (C) a place where coal is processed (D) a mine that is beneath the earth where coal is found
answer:

D