The correct option is Software components with precise version identifiers.

Software components with precise version identifiers is correct because software configuration management is concerned with identifying, recording, and controlling the exact components that make up a build and their versions. This control provides reproducible builds, clear change traceability, and the ability to reproduce or roll back specific releases.

Setup and configuration instructions are important supporting documentation but they are not the primary objects that SCM records and controls. They may be stored with the configuration but they do not define the build components and their versions.

Complete source code listings can be part of what a configuration management system stores, but the phrase is misleading. SCM focuses on managing components and their precise version identifiers rather than simply keeping listings of source files.

User acceptance criteria are requirements and test acceptance items and they belong to requirements and testing processes. They are not elements of a software build that SCM records and controls.

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