If a firm is earning just enough to cover all its economic profits does that mean it's not making a profit?

Electricity accounts for almost 20% of the cost of making steel. A 10% increase in electricity prices results in steel firms decreasing production and thereby demanding 5% less electricity. Over many years, technological innovations can change the way steel firms make steel and reduce the industry's energy requirements. This suggests that the steel industry's short-run elasticity of demand for

electricity is probably A) less than one in absolute terms in the short run. B) less than its long-run elasticity of demand for electricity. C) Both A and B above. D) Neither A nor B above.

When the central bank lowers the reserve requirement on deposits, _____

a. the money supply in an economy increases and interest rates decrease b. both the money supply and interest rates in an economy decrease c. both the money supply and interest rates in an economy increase d. the money supply in an economy decreases and interest rates increase