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: Diploid cultivars have ____ alleles.\Question: Choose the right answer from options given a) eight b) six c) two d) five

Output: c


Input: Consider Input: Mammals have only ____ sets of teeth.\Question: Choose the right answer from options given a) six b) five c) seven d) two

Output: d


Input: Consider Input: Fleas are small wingless insects averaging ____ to four millimeters.\Question: Choose the right answer from options given a) eight b) two c) seven d) nine


Output: b