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").

Ex Input:
With extended feet, this creature may grab bass from overhead. (A) bees (B) shark (C) sparrow (D) eagle

Ex Output:
D


Ex Input:
Which of the following is an example of ecological succession? (A) a group of horses slowly becomes extinct due to loss of habitat (B) a group of rats in a lab learn to navigate a maze (C) a soccer team trains for the championship (D) Trees, insects, and birds in a forest grew from wildfire-ravaged lands

Ex Output:
D


Ex Input:
An example of how sunlight is a source of light from the sun is (A) weather being variable (B) raising temps (C) windmills producing energy (D) frogs croaking

Ex Output:

B