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:
Which is a byproduct of a lightbulb? (A) taste (B) death (C) warmth (D) sound
answer:
C


question:
How long does it take Earth to fully revolve one time (A) 28 hours (B) 46 hours (C) 1400 minutes (D) 1440 minutes
answer:
D


question:
The way that squirrels put away food during the cool season ensures that they (A) survive (B) eat (C) live (D) grow
answer:

A