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: Rock cavies become sexually mature when they are about one to ____ months old.\Question: Choose the right answer from options given a) one b) four c) three d) seven

Output: c


Input: Consider Input: Bloody diarrhea lasts for two to ____ days.\Question: Choose the right answer from options given a) nine b) five c) three d) no

Output: b


Input: Consider Input: Perennial weeds live for ____ or more years.\Question: Choose the right answer from options given a) zero b) two c) one d) eight


Output: b