Refer to the table below,which shows the results of payback,net present value,and internal rate of return analysis of four projects.Which is preferred by the net present value criterion? 
Definitions:
Stressful Lives
Refers to the condition of experiencing high levels of stress due to various factors such as work, relationships, or financial problems.
Stress Research
The study of the effects of stress on the mind and body, including how it influences health and behavior.
Hans Selye
A scientist known for his research on stress and its effects on the human body, introducing the concept of the General Adaptation Syndrome.
Work Problems
Mathematical problems that involve calculating the rates at which workers complete certain tasks.
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