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:
Parliaments can last five years, often last ____ and a bit.\Question: Choose the right answer from options given a) four b) three c) five d) two

Ex Output:
a


Ex Input:
Toucanets encompass ____ genera.\Question: Choose the right answer from options given a) seven b) six c) two d) one

Ex Output:
c


Ex Input:
Dragonflies can move each of their ____ wings independently.\Question: Choose the right answer from options given a) zero b) five c) four d) eight

Ex Output:

c