3.The economy is in long-run equilibrium when the government decides to significantly increase spending on transportation infrastructure (creating technological knowledge progress), which will lower shipping costs for many businesses. What might we expect in the short run and the long run to happen to real GDP and the price level?

a.

Real GDP will increase and the price level will fall, but in the long run, there will be no effect.

b.

Real GDP will increase and the price level will fall, but in the long run, real GDP will increase and the price level might rise, fall, or stay the same.

c.

Real GDP will increase and the price level might rise, fall, or stay the same, and in the long run, real GDP will increase and the price level might rise, fall, or stay the same.

d.

Real GDP will increase and the price level might rise, fall, or stay the same, but in the long run, the price level will increase and real GDP might rise, fall or stay the same.