When an economy is temporarily operating at an output that is beyond its full-employment rate, a. only restrictive fiscal policy will direct the economy back to full employment. b. excess supply in resource markets will eventually lead to lower resource prices, which will decrease costs and direct the economy toward full employment. c. lower wages and prices will quickly restore full employment. d. excess demand in resource markets will lead to higher resource prices, which will increase costs and direct the economy toward full employment?