If the government increases its current consumption (G) by $2B, which of the following is most likely to happen to the aggregate consumption demand (Cd+G) if all households are forward looking and are able to follow their consumption-smoothing motive?

a.it decreases by an amount less than $2B

b.it decreases by $2B

c.it increases by an amount less than $2B

d.it increases by $2B