Unexpected increases in inventories usually precede

A firm's expansion path

A) shows the targeted growth rate in sales over the long run. B) is the same thing as its long-run average cost curve. C) is a curve that shows a firm's cost-minimizing combination of inputs for every level of output, holding input prices constant. D) is a curve that shows expected profits at various price levels.

Before the nation's first transcontinental railroad was completed, travelers to the Pacific Coast used which forms of transportation?

a. ship, wagon b. dugout canoe, dirigible c. horse d. All of the above are correct.