Suppose Equilibrium Income in an Economy Decreases by $600 as a Result

Suppose equilibrium income in an economy decreases by $600 as a result of a change in government spending. If the multiplier is 3, what is the change in government spending?

A) Government spending will decrease by $1,800.
B) Government spending will decrease by $600.
C) Government spending will decrease by $200.
D) Government spending will increase by $400.
E) Government spending will increase by $1,200.