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').

Ex Input:
Widowed men are ____ times as likely to be murdered.\Question: Choose the right answer from options given a) two b) four c) three d) no

Ex Output:
b


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

Ex Output:
d


Ex Input:
Most people lose a pound every one to ____ days.\Question: Choose the right answer from options given a) nine b) ten c) two d) six

Ex Output:

c