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: Brachiopods are superficially similar to bivalves, both having ____ shells.\Question: Choose the right answer from options given a) two b) eight c) seven d) one

Output: a


Input: Consider Input: Dispassion is a ____ edged sword.\Question: Choose the right answer from options given a) six b) two c) zero d) four

Output: b


Input: Consider Input: Liver cancer is found ____ times more often in men than in women.\Question: Choose the right answer from options given a) nine b) two c) ten d) four


Output: d