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').

Input: Consider Input: Fruit trees are usually safe after ____ years.\Question: Choose the right answer from options given a) five b) four c) no d) three

Output: d


Input: Consider Input: Chipmunks produce one or ____ litters a year.\Question: Choose the right answer from options given a) three b) one c) ten d) two

Output: d


Input: Consider Input: Public health differs from health care in ____ major ways.\Question: Choose the right answer from options given a) one b) three c) no d) two


Output: d