The Figure Given Below Represents the Leakages and Injections in an Economy

The figure given below represents the leakages and injections in an economy. Figure 10.2 In the figure:
I, I₁: Investment;
G: Government spending;
EX, EX₁: Exports;
T: Taxes;and
M: Imports.
Refer to Figure 10.2.When total injections equal $20, the equilibrium level of real GDP is:

A) $100.
B) $200.
C) $300.
D) $400.
E) $500.