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:
Owls have ____ toes on each foot, like most birds.\Question: Choose the right answer from options given a) no b) seven c) four d) one

Ex Output:
c


Ex Input:
Vampires generally are male, and rabies is ____ times more frequent in men than in women.\Question: Choose the right answer from options given a) no b) two c) zero d) seven

Ex Output:
d


Ex Input:
Arbitration is a process where one or ____ arbitrators make a decision about the case.\Question: Choose the right answer from options given a) four b) two c) zero d) three

Ex Output:

d