When you release a task of a transport request that contains changes to a program in an AS ABAP-based SAP system, the object list of the task is handed over to the transport request (C). This means that all the objects associated with that task, including programs, function modules, tables, etc., are consolidated under the transport request, preparing it for transport to another system. Repository locks (A) are not released until the entire transport request is released, ensuring the consistency of changes. A temporary version in version management (B) might be created during the editing of objects, but this is not directly related to the task release. The creation of a data file and a cofile (D) occurs when the transport request itself is released, not just an individual task within it.