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: which of these conditions might lead to the inability to move one's bones? (A) the absence of blood platelets (B) an absence of vitamin C (C) muscular wasting might be present (D) a shortage of white blood cells
Example Output: C

Example Input: Some people have an (A) tubs for skin (B) extra rib (C) snakes for hair (D) magic
Example Output: B

Example Input: Which of the following would be an example of tool use in the animal kingdom? (A) a wolf using its sense of smell to track down prey (B) a crow displacing water with rocks to get good (C) a giant whale filtering plankton from water (D) An anteater using its long tongue to catch ants
Example Output:
B