What condition must be met for equilibrium in an open economy with four sectors?

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Actual injections equal actual withdrawalsPlanned injections match planned withdrawalsSavings are equivalent to investmentGovernment expenditures equal tax income

Explanation

Equilibrium in an open four-sector economy occurs when the total actual injections into the economy are exactly balanced by the total actual withdrawals. This ensures that the flow of funds remains steady without causing expansion or contraction.