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: Rheumatic fever begins one to ____ weeks after an untreated streptococcal infection.\Question: Choose the right answer from options given a) six b) ten c) two d) zero

Output: a


Input: Consider Input: Traditional neon electrifies the inert gas from ____ directions.\Question: Choose the right answer from options given a) two b) nine c) one d) six

Output: a


Input: Consider Input: Young deer begin foraging on plants within a month and are completely weaned in ____ months.\Question: Choose the right answer from options given a) ten b) five c) three d) nine


Output: c