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 does light from the sun arrive at in final time length? (A) Uranus (B) Mars (C) Pluto (D) Earth

Ex Output:
C


Ex Input:
Though fossil fuels and their byproducts will eventually be used up completely, we'll still have (A) gasoline (B) coal (C) plastics (D) light from stars

Ex Output:
D


Ex Input:
Which form can be made into a triangle? (A) ice (B) steam (C) water (D) salt water

Ex Output:

A