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:
China is reportedly in the top ____ nations in industrial output.\Question: Choose the right answer from options given a) seven b) ten c) three d) five

Ex Output:
b


Ex Input:
Fryers have ____ thermostats.\Question: Choose the right answer from options given a) five b) three c) two d) one

Ex Output:
c


Ex Input:
Many children have febrile seizures before the age of ____ without developing epilepsy.\Question: Choose the right answer from options given a) nine b) one c) five d) eight

Ex Output:

c