Implementation is one of the more complex and time consuming phases of the System Development Life Cycle.

(a)Explain what work has already been completed before the start of Implementation.

(b)Describe what work is done during Implementation and explain why it is important.

(c)Explain why more time spent during earlier software development phases (e.g. analysis and design) can contribute to reducing overall software development costs. Provide an illustrating example to support your arguments.