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: which of these formations are typically the highest point from sea level? (A) the sandy river bank (B) a long river channel (C) a cooled lava top (D) a lush green valley

Output: C


Input: Consider Input: If a flag is adjusted at great heights (A) something is pulled (B) something is ravaged (C) something is burned (D) something is gold


Output: A