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').

Ex Input:
Potassium helps maintain fluid regulation and normal pH. All ____ help normalize.\Question: Choose the right answer from options given a) three b) six c) two d) one

Ex Output:
a


Ex Input:
Cloves Chew ____ whole cloves.\Question: Choose the right answer from options given a) three b) four c) six d) five

Ex Output:
d


Ex Input:
Decoction is made by using ____ ounces of the root to one quart of water, and boil.\Question: Choose the right answer from options given a) six b) three c) two d) one

Ex Output:

b