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:
Righteousness always points in ____ directions.\Question: Choose the right answer from options given a) six b) two c) one d) four

Ex Output:
b


Ex Input:
Cleavage occurs typically in either one, two, three, four, or ____ directions.\Question: Choose the right answer from options given a) six b) three c) ten d) two

Ex Output:
a


Ex Input:
Agricultural products account for ____ thirds of export earnings.\Question: Choose the right answer from options given a) ten b) four c) two d) five

Ex Output:

c