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:
A filament that is in a glass container will be this when a switch is flipped to cause glass to glow: (A) dark (B) toasty (C) cold (D) icy

Ex Output:
B


Ex Input:
An example of conservation is (A) jogging (B) reducing ethanol use (C) hiking (D) raking leaves

Ex Output:
B


Ex Input:
When light enters the eye through the pupil the light falls on the what? (A) brain (B) optic disk (C) retina diagram (D) nose

Ex Output:

B