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:
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:
A good conductor of electricity would be (A) tree (B) coke bottle (C) your finger (D) coke can

Ex Output:
D


Ex Input:
A chemical reaction can be caused by (A) pouring soda into milk (B) putting vinegar in a bowl (C) bleach vinegar combo solution (D) pouring baking soda out of a box

Ex Output:

C