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').

Example Input: Electrolytic capacitors have a finite lifetime, usually about ____ years.\Question: Choose the right answer from options given a) zero b) ten c) four d) eight
Example Output: b

Example Input: Most families have between ____ and eight children.\Question: Choose the right answer from options given a) four b) one c) five d) three
Example Output: c

Example Input: Dairy farmers milk their cows twice, sometimes ____ times a day, every day of the year.\Question: Choose the right answer from options given a) three b) five c) nine d) four
Example Output:
a