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:
Mountain goats have ____ sharp horns.\Question: Choose the right answer from options given a) two b) six c) ten d) four

Ex Output:
a


Ex Input:
Flatbed scanners can also record ____ dimensional objects of many sizes and shapes.\Question: Choose the right answer from options given a) eight b) one c) four d) three

Ex Output:
d


Ex Input:
Abortion happens through all ____ months of pregnancy.\Question: Choose the right answer from options given a) nine b) five c) four d) eight

Ex Output:

a