4. The U.S. economy was at its steady state in 1972. In 1973, a huge increase in energy prices led to a large permanent decrease in productivity in the U.S. economy. a. Using a basic Solow Growth Model diagram, clearly show and provide a brief economic explanation for how this change affected the steady state, income-per-worker, and the capital-to-labor ratio. b. Compare the rate of economic growth at the new steady state to the rate of economic growth at the old steady state. c. What was the relationship between economic growth and labor force growth during the transition period, i.e., which grew faster? Be sure to explain your answer. d. What was the relationship between labor force growth and capital accumulation (capital stock growth) during the transition period, i.e., which grew faster? Be sure to explain your