Consider a closed-economy IS–LM model. The IS and LM equations are \[ Y=C(Y)+I(z)+\bar G,\qquad \frac{\bar M}{\bar P}=kY-l\,i, \] where \(z\equiv i-\pi^{e}\). Suppose everyone suddenly expects higher future inflation \((\uparrow \pi^{e})\). Assuming the LM curve remains unchanged, what happens in the short run?