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: Anthrax usually is a fatal disease with ____ symptoms observed.\Question: Choose the right answer from options given a) no b) seven c) one d) six

Output: a


Input: Consider Input: Collars come in ____ shapes.\Question: Choose the right answer from options given a) six b) two c) four d) zero

Output: b


Input: Consider Input: Euonymus scale have ____ to three generations per year, depending on the climate.\Question: Choose the right answer from options given a) nine b) eight c) one d) six


Output: c