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: Couples often date from one to ____ years before getting engaged.\Question: Choose the right answer from options given a) three b) nine c) eight d) seven

Output: a


Input: Consider Input: Minks travel more than most furbearers, covering up to ____ miles a night.\Question: Choose the right answer from options given a) four b) five c) zero d) ten

Output: d


Input: Consider Input: Infantile colic is benign paroxysmal abdominal pain during the first ____ months of life.\Question: Choose the right answer from options given a) three b) four c) five d) two


Output: a