Ca = 25 + 0

Ca = 25 + 0.75 (Y - T) Ig = 50 Xn = 10
G = 70
T = 30
(Advanced analysis) The accompanying equations are for a mixed open economy.The letters Y, Ca, Ig, Xn, G, and T stand for GDP, consumption, gross investment, net exports, government purchases, and net taxes, respectively.Figures are in billions of dollars.If government desired to raise the equilibrium GDP to $650, it could

A) raise G by $45 and reduce T by $10.
B) raise G by $40 and reduce T by $30.
C) raise G by $30 or reduce T by $40.
D) raise both G and T by $40.