System Analysis and Design
An audit trial is

None of these
designed to permit tracing of any input record or process performed on a system, back toits original sources
test data used by the system auditor
All of these
post-auditing the system after its implementation

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

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

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