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").

Example Input: Viruses are killed by objects used in a (A) backyard (B) bathroom (C) kitchen (D) living room
Example Output: C

Example Input: If a thing has a good impact on nature, it is most likely (A) putting plastics in special containers (B) burning old used tires (C) putting cigarettes out in ponds (D) using aerosol air fresheners
Example Output: A

Example Input: An example of an electrical circuit could be (A) Dimming the lights (B) Driving a car (C) Drinking water (D) Riding a bike
Example Output:
A