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

All of these
None 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
Positive testing is

is checking the logic of one or more programs in the candidate system
testing changes made in an existing or a new program
running the system with line data by the actual user
making sure that the new programs do in fact process certain transactions according to Specifications

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