(Advanced Analysis)Answer the Question on the Basis of the Following

Multiple Choice

(Advanced analysis) Answer the question on the basis of the following data for a private closed economy.The letters Y,C,S,and I are used to represent real GDP,consumption,saving,and investment respectively. $\begin{array}{ccc}\underline{\text { GDP }(Y) } & \underline{\text { Consumption (C) }} & \underline{\text { Investment (I) }} \\\$ \$ 0 & \$ 60 & \$ 30 \\100 & 120 & 40 \\200 & 180 & 50 \\300 & 240 & 60 \\400 & 300 & 70 \\500 & 360 & 80\end{array}$ Refer to the data.Equilibrium Y (= GDP) is:

A) $100.
B) $200.
C) $300.
D) $400.