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:
Ground beef can last up to four months, and chicken parts can stay good for ____ months.\Question: Choose the right answer from options given a) ten b) no c) nine d) zero

Ex Output:
c


Ex Input:
All quetzals have ____ legs.\Question: Choose the right answer from options given a) four b) zero c) eight d) ten

Ex Output:
a


Ex Input:
Poor sleep affects more women than men and is reported by ____ in three adults.\Question: Choose the right answer from options given a) eight b) ten c) five d) one

Ex Output:

d