System Analysis and Design
The approach used in top-down analysis and and design is

None of these
to identify a top level function and then create a hierarchy of lower level modules and components
to identify the top level functions by combining many smaller components into a single entity.
to prepare flowcharts after programming has been completed
All of these

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

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

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