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the Above Table Gives Data for the Nation

$\begin{array}{rccc}\hline &\text { Consumption }&&\text { Government }\\\text { Real GDP, } Y &\text { expenditure, } C& \text { Investment, } I& \text { expenditure, } G\\\text { (billions of } & \text { (billions of } & \text { (billions of } & \text { (billions of } \\\text { 2005 dollars) } & \text { 2005 dollars) } & \text { 2005 dollars) } & \text { 2005 dollars) }\\\hline15 & 6 & 5 & 5 \\20 & 10 & 5 & 5 \\25 & 14 & 5 & 5 \\30 & 18 & 5 & 5 \\35 & 22 & 5 & 5\\\hline\end{array}$
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The above table gives data for the nation of Mouseville. There are no imports into or exports from Mouseville. Unplanned inventory changes are zero when real GDP equals

A) $500 billion.
B) $900 billion.
C) $300 billion.
D) $800 billion.
E) $700 billion.