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

Ex Output:
B


Ex Input:
How is a place of lower elevation affected by flooding when compared to a higher location? (A) It is more affected by the flood (B) It is impossible to flood a lower elevation location (C) It is more resistant than a higher place (D) The lower area is already flooded

Ex Output:
A


Ex Input:
Which causes more matter vibration? (A) megaphone (B) walking (C) speaking (D) yelling

Ex Output:

A