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: Once the grounds frost over and the air grows chilled (A) beaches are opened (B) humans go naked (C) birds lay eggs (D) roses die

Output: D

Input: Consider Input: An example of an acquired characteristic is (A) the thickness of a horse's mane (B) the length of a horse's mane (C) the number of legs a horse has (D) the color of a horse's mane

Output: B

Input: Consider Input: The basic outside of our planet is comprised of (A) types of stone (B) frozen green grass (C) solid ice balls (D) molten hot lava
Output: A