Explain clearly

The Australian economy is initially in long rim equilibrium. Due to prolonged peace, the Federal Governments decides to cut its defence spending by $1 billion. In the short run O the aggregate demand curve shifts left and the short run aggregate supply curve shifts left. O the aggregate demand curve shifts left and the short-run aggregate supply curve does not shift. O the aggregate demand curve shifts right and the short-run aggregate supply curve shifts left. O the aggregate demand curve shifts left and the short-run aggregate supply curve shifts right. the aggregate demand curve shifts right and the short run aggregate supply curve does not shift