Comprehensive and Detailed Explanation From Exact Extract:

Interactive runs from the tested object or its test class in ADT: In RAP/ABAP Cloud test guides, you specify a test relation, which then lets you run unit tests directly from the context menu of the behavior definition (tested object) in ADT. This is the “Run as unit test” interaction from the tested object.

Interactive runs from the test class itself: Test classes are declared with FOR TESTING, and the same RAP guides show the canonical test-class structure used for ABAP Unit. In ADT, you can execute the test class via its context menu (“Run as Unit Test”).

Mass execution with ATC: The same document set prescribes governance via ABAP Test Cockpit (ATC) check variants applied across many objects, supporting mass test/check execution. ATC is used broadly to enforce ABAP Cloud rules and quality gates across developments, which covers running checks/tests at scale (mass).

There is no built-in mechanism to execute unit tests during transport release; the recommended mass execution path is via ATC, not via the Transport Organizer. (Hence B and E are not correct.)

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