-The Above Table Gives Data for the Nation of South

$$\begin{array} { c c c c } \begin{array} { c } \text { Real GDP, Y } \\\text { (billions of 2005 dollars) }\end{array} & \text { Consumption expenditure, C } & \text { Investment, I } & \text { Government expenditure, G } \\\text { (billions of 2005 dollars) } & \text { (billions of 2005 dollars) } & \text { (billions of 2005 dollars) } \\\hline 100 & 150 & 150 & 100 \\200 & 200 & 150 & 100 \\300 & 250 & 150 & 100 \\400 & 300 & 150 & 100 \\500 & 350 & 150 & 100 \\600 & 400 & 150 & 100 \\700 & 450 & 150 & 100 \\800 & 500 & 150 & 100 \\900 & 550 & 150 & 100\end{array}$$
-The above table gives data for the nation of South Hampton.There are no imports into or exports from South Hampton.The equilibrium level of real GDP is

A) $500 billion.
B) $600 billion.
C) $700 billion.
D) $800 billion.
E) $400 billion.