What is the difference between a TestCase and a TestStep?

What is the difference between a TestCase and a TestStep?

• A. A TestCase is a container of TestSteps; a TestStep is a single action, verification, or data operation.
• B. A TestCase is a single action; a TestStep is a container of actions.
• C. A TestCase runs UI tests; a TestStep runs data operations.
• D. A TestCase is for configurations; a TestStep is for test data.

Answer: (A)