What is an equivalence partition (also known as an equivalence class)?

  1. A set of test cases for testing classes of objects

  2. An input or output range of values such that only one value in the range becomes a test case

  3. An input or output range of values such that each value in the range becomes a test case

  4. An input or output range of values such that every tenth value in the range becomes a test case.


Correct Option: B

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