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").

Input: Consider Input: A plastic toy reduced to a puddle was left on a (A) steep mountain (B) iceberg (C) government propaganda flick (D) hotplate

Output: D


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

Output: A


Input: Consider Input: Some plants are easy for hummingbirds to sip nectar from. While the hummingbirds are taking nectar, the plants also gain something, which is (A) bird friends (B) more nectar (C) extra food (D) a pollinator


Output: D