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").

Input: Consider Input: an area of low-lying ground near to a river is at risk of (A) over fishing (B) balloon landings (C) droughts (D) H20 accumulation

Output: D


Input: Consider Input: Who is most likely to die of old age? (A) adults (B) children (C) infants (D) reasonable high-school students

Output: A


Input: Consider Input: Why is it fall one month and spring another month? (A) the moon has different phases (B) the earth is revolving (C) solar flares appear in cycles (D) the earth is in a different place in its orbit


Output: D