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

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

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System Analysis and Design
A square symbols

None of these
defines a source or destination of system data
is a data store-data at rest, or a temporary repository of data
identifies data flow
represents a process that transforms incoming data flow(s) into outgoing data flows

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