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 of the following is never an element used to make carbohydrates for the plant? (A) sand (B) water (C) sunlight (D) carbon dioxide

Ex Output:
A


Ex Input:
The producer makes its own: (A) body (B) sustenance (C) air (D) grass

Ex Output:
B


Ex Input:
If the temperature is 34 degrees Fahrenheit, what could be put on top of the icy sidewalk to turn the ice to liquid? (A) sodium (B) dry leaves (C) pebbles (D) dry ice

Ex Output:

A