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: Kabbalists group the simple letters into ____ triplets.\Question: Choose the right answer from options given a) four b) no c) ten d) three

Output: a


Input: Consider Input: Ales actively ferment with yeast for two to ____ days.\Question: Choose the right answer from options given a) five b) nine c) three d) six

Output: c


Input: Consider Input: Children are usually able to brush and floss by themselves at ____ or seven years of age.\Question: Choose the right answer from options given a) no b) six c) seven d) nine


Output: b