(Advanced Analysis) the Table Gives Data for a Private Closed

Multiple Choice

$$\begin{array} { | c | c | c | } \hline G D P ( Y ) & \text { Consumption (C) } & \text { Investment (I) } \\\hline \$ 0 & \$ 60 & \$ 30 \\\hline 100 & 120 & 40 \\\hline 200 & 180 & 50 \\\hline 300 & 240 & 60 \\\hline 400 & 300 & 70 \\\hline 500 & 360 & 80 \\\hline\end{array}$$ (Advanced analysis) The table gives data for a private closed economy. The letters Y, C, S, and I are used to represent real GDP, consumption, saving, and investment, respectively. The equation
Representing the investment schedule for the economy is

A) I = 0.3Y.
B) I = 80 ? 0.3Y.
C) I = 30 + 0.1Y.
D) I = I0 = 30.