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:
Molecules are ____ or more atoms stuck together.\Question: Choose the right answer from options given a) two b) zero c) six d) eight

Ex Output:
a


Ex Input:
Cattle are the second most important commodity in ____ states and third in six states.\Question: Choose the right answer from options given a) nine b) five c) no d) eight

Ex Output:
a


Ex Input:
Disaccharides are just ____ monosaccharides hanging out with one another.\Question: Choose the right answer from options given a) two b) three c) eight d) one

Ex Output:

a