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:
Once the grounds frost over and the air grows chilled (A) beaches are opened (B) humans go naked (C) birds lay eggs (D) roses die
answer:
D


question:
Which event includes melting? (A) making ice (B) cooking in butter (C) cutting carrots (D) buttering bread
answer:
B


question:
In a plant such as a cactus, water is held within (A) the spikes on the stem (B) the lines of a stem (C) the inside of the leaves (D) the series of tubes in the body
answer:

D