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:
Females can only have four babies at ____ time.\Question: Choose the right answer from options given a) no b) one c) nine d) three

Ex Output:
b


Ex Input:
Guinea has ____ territories or colonies.\Question: Choose the right answer from options given a) no b) seven c) three d) eight

Ex Output:
a


Ex Input:
Fingernails have a life span of three to ____ months.\Question: Choose the right answer from options given a) two b) eight c) six d) one

Ex Output:

c