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: Decapod crustaceans have ____ pairs of limbs.\Question: Choose the right answer from options given a) five b) four c) six d) seven

Output: a


Input: Consider Input: Some homeopathic remedies are so dilute, ____ molecules of the healing substance remain.\Question: Choose the right answer from options given a) ten b) three c) one d) no

Output: d


Input: Consider Input: Moles are small, destructive burrowing creatures about ____ to eight inches long.\Question: Choose the right answer from options given a) seven b) six c) ten d) five


Output: d