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: Casinos have no windows and they have ____ clocks.\Question: Choose the right answer from options given a) six b) four c) eight d) no

Output: d


Input: Consider Input: Most herbal formulas contain ____ to twelve herbs in various combinations.\Question: Choose the right answer from options given a) four b) no c) seven d) six

Output: d


Input: Consider Input: Cuttlefish have eight arms and ____ tentacles.\Question: Choose the right answer from options given a) two b) ten c) six d) one


Output: a