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').

Example Input: Widowed men are ____ times as likely to be murdered.\Question: Choose the right answer from options given a) two b) four c) three d) no
Example Output: b

Example Input: Most resistors have three coloured bands close together at one end and ____ single band at the other.\Question: Choose the right answer from options given a) two b) one c) ten d) five
Example Output: b

Example Input: Compulsory schooling exists for children in the age between ____ and twelve years.\Question: Choose the right answer from options given a) six b) nine c) four d) two
Example Output:
a