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 plant needing to photosynthesize will best be able to (A) in a roofless room (B) in a cardboard box (C) in a windowless room (D) in a car with tinted windows

Ex Output:
A


Ex Input:
Flashlights (A) illuminate ideas and thoughts (B) illuminate answers to questions (C) illuminate pathways in an overgrown forest (D) illuminate bright sunny days

Ex Output:
C


Ex Input:
An incandescent light bulb requires a filament to (A) emit illumination (B) emit radiation (C) convert mechanical energy (D) convert chemical energy

Ex Output:

A