The Letters Y,C,I_g,X,and M Stand for GDP,consumption,gross Investment,exports,and Imports Respectively

The letters Y,C,I_g,X,and M stand for GDP,consumption,gross investment,exports,and imports respectively.Figures are in billions of dollars.
C = 26 + .75Y
I_g = 60
X = 24
M = 10
-Refer to the above information.If the economy's tax schedule was T = 0.2Y rather than T = T₀ = 30,the equilibrium GDP would be:

A) $387.3.
B) $518.5.
C) $316
D) $412