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 competition? (A) a giraffe eats the highest leaves (B) a bear takes a salmon from the stream (C) a shark eats a tuna that an orca was hunting (D) a slug eats a blade of grass
answer:
C


question:
Who'd be able to see a rose is pink at night? (A) rocks (B) the Rio Grande (C) a beeping sound (D) lemurs
answer:
D


question:
The moon's surface (A) is smooth on the entire surface (B) contains large cavities cause by explosions (C) contains an internal core of cheese (D) is filled with lakes
answer:

B