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: Banks hold ____ excess reserves and the public holds no currency.\Question: Choose the right answer from options given a) two b) seven c) ten d) no

Output: d


Input: Consider Input: Bacteria come in ____ basic shapes.\Question: Choose the right answer from options given a) five b) one c) three d) nine

Output: c


Input: Consider Input: Seahorses reproduce sexually, because they combine gametes from ____ parents.\Question: Choose the right answer from options given a) zero b) no c) ten d) two


Output: d