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:
Huntsman spiders have large, hairy bodies with ____ long legs.\Question: Choose the right answer from options given a) three b) eight c) ten d) six

Ex Output:
b


Ex Input:
Rheumatic fever begins one to ____ weeks after an untreated streptococcal infection.\Question: Choose the right answer from options given a) six b) ten c) two d) zero

Ex Output:
a


Ex Input:
Japan has numerous volcanoes, about ____ hundred, and many earthquakes.\Question: Choose the right answer from options given a) no b) two c) seven d) ten

Ex Output:

b