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:
Pairs encodes all sets of objects with ____ components.\Question: Choose the right answer from options given a) ten b) five c) two d) no

Ex Output:
c


Ex Input:
Roundworms are fairly large worms that can grow to be ____ or five inches long.\Question: Choose the right answer from options given a) no b) nine c) four d) zero

Ex Output:
c


Ex Input:
Vietnamese women are more than ____ times as likely to suffer cervical cancer.\Question: Choose the right answer from options given a) five b) eight c) three d) zero

Ex Output:

a