In a simple grass-mowing business, the lawn mower and the labor would be

The economics of slavery suggests that

(a) slave labor produced efficiencies in Southern agriculture. (b) slave owners possessed economic incentives to beat and exploit their slaves. (c) Southern agriculture was less profitable than northern farming. (d) Southern agriculture was just and moral.

In the short run, if a firm produces nothing, total costs are zero

a. True b. False Indicate whether the statement is true or false