Given the two graphs shown below, which one represents a tree? 
Definitions:
Savings Rate
is the proportion of disposable income that households save rather than spend on consumption.
Federal Budget
A government plan for revenue and spending for a coming fiscal year, detailing how funds will be allocated among various government departments and programs.
Industrial Country
Refers to a nation with a well-developed industrial base, where manufacturing and other industries contribute significantly to the economy.
Medical Administrative Cost
Expenses associated with the administration of medical services, such as billing and insurance processing.
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