Multiple choice technology testing

One of the fields on a form contains a text box which accepts alpha numeric values. Identify the Valid Equivalence class

  1. BOOK

  2. Book

  3. Boo01k

  4. book
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C Correct answer
Explanation

An alphanumeric field accepts both alphabetic letters and numeric digits. 'Boo01k' is the only option containing a combination of both letters and numbers, making it the only valid representative of the alphanumeric equivalence class. Other options like 'BOOK' and 'Book' consist solely of alphabetic characters.

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