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: Drinking cola daily removes layers from the surface of (A) enamel on molars (B) spoons (C) porcelain (D) the coffee pot
Example Output: A

Example Input: If a handheld cylinder is allowing people to see in the forest after dusk, then the item likely (A) needs a blanket (B) is a stone (C) hooks to outlets (D) uses knitting needles
Example Output: C

Example Input: A person wants to signal to another person, but is lacking a flashlight. They can (A) shuffle sunlight with mirrors (B) direct sunlight with cones (C) direct others with glass (D) direct shades with hands
Example Output:
A