System Analysis and Design
System prototyping helps the designer in

giving a demo of the software, to the system manager to whom he reports
making the programmers understand how the system will function.
all of the listed here
communicating to the user, quickly, how the system, when developed, will look like and get a feedback.

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System Analysis and Design
Cost-Benefit analysis

None of these
All of these
evaluates the tangible and non-tangible factors
compares the cost, with the benefits, of introducing a computer-based system
estimates the hardware and software costs

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