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.