In a simple encoding dictionary, the entry for the key 'year' should be which pair?

• A. year -> n
• B. year -> y
• C. year -> m
• D. year -> x

Answer: (B)

In a simple encoding dictionary, each word is mapped to a short code derived from the word itself. A common rule is to use the first letter of the word as its code. The word year begins with y, so its encoding is y. Therefore the pair is year -> y. This rule makes the dictionary predictable and easy to use, though in practice you’d handle potential collisions if other words also start with y.