The Following Figure Illustrates the Keynesian Model of Equilibrium in the Macroeconomy

The following figure illustrates the Keynesian model of equilibrium in the macroeconomy.

-At a total output of zero:

A) injections into the spending stream are zero.
B) injections into the spending stream are $2 trillion.
C) leakages from the spending stream are $2 trillion.
D) both injections into, and leakages from, the spending stream are $2 trillion.