There are some economists who argue that low mortgage interest rates in the time period preceeding the financial crisis of 2007-2009 were a result of a ___________ in global savings. They argue that emerging countries began to save ___________ which helped to _____________ the supply of loanable funds in the United States

In the short run, if marginal product is at its maximum, then

A) average variable cost is at its minimum. B) total cost is at its maximum. C) marginal cost is at its minimum. D) average cost is at its minimum.

Table 30.1Number of workers (per hour)Total output (per hour)Marginal physical product (output per worker)Total revenue (dollars per hour)Marginal revenue product (dollars per hour worker)14---________---210________________________315________________________419________________________522________________________Assume that the product price is $4 per unit and that the hourly wage for workers is $12. Neither price nor wage changes with output. In Table 30.1, how many workers should be hired?

A. 3. B. 2. C. 4. D. 5.