Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').

Input: Consider Input: China is reportedly in the top ____ nations in industrial output.\Question: Choose the right answer from options given a) seven b) ten c) three d) five

Output: b


Input: Consider Input: Most birds have ____ toes, three that face forward and one rearward.\Question: Choose the right answer from options given a) two b) ten c) nine d) four

Output: d


Input: Consider Input: Sticklebacks make up ____ genera, most of which have just one species.\Question: Choose the right answer from options given a) seven b) six c) five d) nine


Output: c