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:
Which of the following can be found on the moon? (A) Non-volcanic Mountains (B) Life-filled Oceans (C) Volcanic Mountains (D) Multiple Land Masses
answer:
A

question:
What substance covers more than sixty nine percent of the third rock from the sun? (A) Desert (B) Cities (C) Ocean (D) Forest
answer:
C