Why does production eventually experience diminishing marginal returns to labor in the short run?
A. Since all factors of production are fixed in the short run, as more and more workers must share these fixed factors, the marginal product of each additional worker will eventually decrease.
B. Since all factors of production are fixed in the short run, as more and more workers must share these fixed factors, the marginal product of each additional worker will immediately decrease.
C. Since the skill level of labor (the amount of human capital) is fixed in the short run, as more and more physical capital is added, the marginal product of each additional worker will decrease.
D. Since at least one factor of production is fixed in the short run, as more and more workers must share the fixed factors, the marginal product of each additional worker will immediately decrease.
E. Since at least one factor of production is fixed in the short run, as more and more workers must share the fixed factors, the marginal product of each additional worker will eventually decrease.