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: Most infected persons have ____ symptoms of disease.\Question: Choose the right answer from options given a) six b) no c) three d) one

Output: b


Input: Consider Input: Many scientists believe the neutrino has ____ mass at all.\Question: Choose the right answer from options given a) eight b) zero c) two d) no

Output: d


Input: Consider Input: Bilinear interpolation uses a weighted average of the ____ nearest pixels.\Question: Choose the right answer from options given a) no b) four c) nine d) five


Output: b