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: Nodes are points in space that have ____ probability for locating an electron there.\Question: Choose the right answer from options given a) no b) six c) zero d) three

Output: c


Input: Consider Input: Statistics show, however, that men are ____ times more likely to be lefty than women.\Question: Choose the right answer from options given a) four b) three c) nine d) two

Output: b


Input: Consider Input: Snails have ____ pairs of tentacles.\Question: Choose the right answer from options given a) four b) two c) one d) three


Output: b