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: Smoking is responsible for one out of ____ American deaths.\Question: Choose the right answer from options given a) five b) six c) nine d) seven

Output: a


Input: Consider Input: Metabolism have ____ stages-catabolism and anabolism.\Question: Choose the right answer from options given a) nine b) two c) five d) three

Output: b


Input: Consider Input: Small bug has ____ distinct bands.\Question: Choose the right answer from options given a) no b) one c) three d) two


Output: d