An example of an excludable good or service is a:

How do economists view positive statements?

a. affirmative, justifying existing economic policy b. optimistic, putting the best possible interpretation on things c. descriptive, making a claim about how the world is d. prescriptive, making a claim about how the world ought to be

A car dealership union negotiates a contract that dramatically increases all salesmen salaries. If one of the salesman is thinking of changing careers to be a hardware salesman, his opportunity cost

a. would not be affected b. would increase if he continued to be a car salesman c. of becoming a hardware salesman would increase d. none of the above