A. A1:N relation exists; for example If a test case is tested with the help of several requirements and is therefore linked to several requirements

B. The linking of requirements, test cases and test togs provides traceability and enables the desired verification of test cases for test case coverage

C. With complete tractably It Is possible to trace test cases to their requirements and test cases which have been executed to their corresponding results.

D. The linking of a requirement, a derived test case and the associated test implementation provides the base for a complete testability.