Example 7.2 Y=C+I+G+X-Z

Example 7.2
Y=C+I+G+X-Z
Consumption C = 25 + 0.8(Y - T)
Investment I = 75
Government expenditure G = 70
X=30
Z = 0.14Y
T = 0.2Y
-Refer to Example 7.2. The multiplier for this economy is:

A) 4.
B) 2.
C) 3.
D) 2.33.