System Analysis and Design
The advantage of Purchase Option is (are)

None of these
All of these
the flexibility of modifying the system at will
No financing is requird. The risk of system obsolescence is shifted to the lessor
Insurances, maintenance, and other expenses are included in the rental charge

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System Analysis and Design
System prototyping helps the designer in

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

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