Hello can you please help me with these questions on economic growth. I have a test in a few weeks. Your help is greatly appreciated

1. According to estimates presented in class, real per-capita incomes in Western Europe in 1820 were times higher than 1820 incomes in Africa. Estimates of per-capita income in 1998 for Western Europe were times higher than 1998 income estimates for Africa. A.) About 3; also about 3. B.) About 3; about 12. C.) About 12; also about 12. D.) About 12; about 3. 2. Which of the following is an endogenous variable in the Solow Model, as we have studied that model in class? A.) Capital per effective unit of labor k. B.) The marginal product of capital MPK. C.) The savings rate s. D.) A. ) and B.) E.) A.), B., and C.). 3. In the Solow Model, which of the following variables are constant in steady-state? A.) Output per effective unit of labor y. B.) The marginal product of capital MPK. C.) The marginal product of labor MPL. D.) A.) and B.) E.) A.), B., and C.) 4. In the steady state of the Solow Model, which of the following variables grows at that same rate that labor L grows? A.) The capital-labor ratio K. B.) The marginal product of labor MPL. C.) Output per worker -. D.) A.) and C.) E.) None of the variables above grow at the same rate that labor L grows in steady state