Which of the following statements is most true about test conditions?

Which of the following statements is most true about test conditions?
A . An item or event of a component or system that can be verified by one or more test cases.
B . The grouping of a composite set of test cases which, when tested as a whole, reveal a positive or negative result.
C . A testable component derived from business requirements.
D . Applies to software testing only.

Answer: A