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").

[Q]: a student leaves a nail line on a mineral sample, so that mineral can be described as what? (A) a mineral (B) a soft mineral (C) a liquid mineral (D) a mineral melt
[A]: B


[Q]: which form of transportation has zero emissions? (A) motorbikes (B) speed boats (C) hybrid cars (D) pedal bikes
[A]: D


[Q]: The cracks in a sidewalk could be caused by (A) black holes (B) Pine (C) time travel (D) emotions
[A]:
B