• (A) Period in the software life cycle in which a software product is created from design documentation and debugged.
• (B) Period in the software life cycle in which a software product is integrated in its operational environment, and tested in this environment to ensure it performs as required.
• (C) Period in the software life cycle during which the basic version of a software product is adapted to a specified set of operational environments and is distributed to a customer base.
• (D) None of these Human engineering is