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:
Riding a two wheeled human powered vehicle is good for the environment because (A) it runs without fuel (B) it helps people stay in shape (C) they are cheaper to maintain (D) they are more fun to drive
answer:
A


question:
Which process does the slate that comes from shale come from? (A) height (B) compression (C) gravity (D) steel
answer:
B


question:
we only have diamonds because of the existence of (A) machines (B) large pressure (C) work force (D) carbonite
answer:

B