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:
Most females are sexually mature at about ____ to six years.\Question: Choose the right answer from options given a) eight b) nine c) five d) two

Ex Output:
c


Ex Input:
Fluoroscopy has ____ magnification modes and image capture.\Question: Choose the right answer from options given a) zero b) two c) nine d) eight

Ex Output:
b


Ex Input:
Goats are ruminants, and like cattle, they have ____ stomach compartments.\Question: Choose the right answer from options given a) three b) eight c) four d) five

Ex Output:

c