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 these could be a reason why the stars seem to be in a different place at dusk than at dawn? (A) rotation of the sky (B) rotation of the sun (C) rotation of the earth (D) rotation of the person

Ex Output:
C


Ex Input:
A piece of pizza is placed within a box and becomes this when something is conducted throughout the box into the food: (A) toasted (B) meaty (C) frozen (D) cool

Ex Output:
A


Ex Input:
chloroplasts are rarely found in (A) root hair cells (B) Eukaryotic cells (C) leaf guard cells (D) rose petal cells

Ex Output:

A