Suppose the Economy Is at an Equilibrium When C

Suppose the economy is at an equilibrium when C + I + G + X - M = $1,200.If the economy is currently at a real national income level of $1,400,then planned expenditures

A) exceed real national income,and output will increase.
B) are less than real national income,and output will decline.
C) are equal to real national income,and there will be no change in output.
D) are less than real national income,and output will increase.