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:
The cultivation of a range of crop types in a specific order has a positive impact on (A) soil quality (B) water quality (C) air quality (D) atmospheric conditions

Ex Output:
A


Ex Input:
A bird is about to lay an egg, so it needs to construct a safe, round place to place the egg in. The bird constructs using (A) sticks (B) gum (C) rocks (D) tape

Ex Output:
A


Ex Input:
Light can easily be seen bouncing off of a (A) paper bag (B) pencil (C) overhead sign (D) cardboard box

Ex Output:

C