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:
Which is likely to provide an undesired acquired characteristic for an organism? (A) a light scratch on its leg (B) learning to leave the nest (C) finding a potential mate (D) dipping a foot in magma

Ex Output:
D


Ex Input:
Locusts historically always affect crops (A) in the sky (B) disadvantageously (C) near water (D) positively

Ex Output:
B


Ex Input:
When does electricity flow through a conductor? (A) when it's outside around lighting (B) when it's attached to a battery (C) when it's attached to a human (D) when it's near a light bulb

Ex Output:

B