Consider the following tree diagram: 
Which of the following nodes are parent nodes?
Definitions:
Hurdle Rate
The minimum acceptable rate of return on an investment that a manager or company would consider in order to pursue the project.
Accounting Rate of Return
A financial ratio that measures the expected profit from an investment compared to its initial cost.
After-Tax Net Income
The profit remaining after all operating expenses, including taxes, have been deducted from total revenue.
Annual Investment
The amount of money invested in a particular asset or project on a yearly basis.
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