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: Digestion is when stomach acid breaks down what? (A) food essays (B) sustenance (C) water (D) air

Output: B


Input: Consider Input: Disposition is the process of forming what? (A) Crystals (B) Rocks (C) Salactites (D) Gemstones

Output: C


Input: Consider Input: Bats hunt through echolocation because (A) bats can only hear echoes (B) echoes are a form of sound (C) their chirps are sent back after bouncing (D) they enjoy listening to echoes


Output: C