Assume that the economy is in​ long-run equilibrium. ​Now, assume that there is an unexpected increase in the price of oil. As a result of higher oil​ prices, the A. ​short-run aggregate supply curve will shift left. B. ​long-run aggregate supply curve will shift left. C. ​short-run aggregate supply curve will shift right. D. aggregate demand curve will shift left. The new​ short-run equilibrium will be