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:
Some infected horses show ____ signs and become chronic carriers of the disease.\Question: Choose the right answer from options given a) nine b) six c) four d) no

Ex Output:
d


Ex Input:
Some families have two daddies or ____ mommies.\Question: Choose the right answer from options given a) nine b) seven c) zero d) two

Ex Output:
d


Ex Input:
Democracy is what the people have voted for ____ years ago.\Question: Choose the right answer from options given a) eight b) five c) seven d) no

Ex Output:

a