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:
Lines of force are ____ dimensional, surrounding a bar magnet on all sides.\Question: Choose the right answer from options given a) eight b) three c) zero d) no

Ex Output:
b


Ex Input:
G is connected and has ____ cycles .\Question: Choose the right answer from options given a) five b) no c) three d) seven

Ex Output:

b