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

PYQ RPSC Programmer 2011

1. A.

   A set of test cases for testing classes of objects

2. B.

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

3. C.

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

4. D.

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

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