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:
Sugar beet is strongly self-sterile setting few or ____ seeds under strict isolation.\Question: Choose the right answer from options given a) three b) no c) five d) nine

Ex Output:
b


Ex Input:
Death occurs during the first ____ days of illness without intensive care.\Question: Choose the right answer from options given a) seven b) eight c) five d) nine

Ex Output:
a


Ex Input:
Taste is comprised of ____ primary senses detected on the palate.\Question: Choose the right answer from options given a) two b) seven c) five d) ten

Ex Output:

c