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:
Cigarette smokers are ____ times more likely to die of lung cancer than nonsmokers.\Question: Choose the right answer from options given a) ten b) six c) four d) nine

Ex Output:
a


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:
Most cod are between ____ and twelve pounds as adults, and weigh between four and ten pounds.\Question: Choose the right answer from options given a) ten b) six c) eight d) four

Ex Output:

b