Is it fair to ask for money from patients on the date of service

Exhibit 34-1 country a country b good x 90 60 30 0 good ygood x good y 0 30 60 90 30 20 10 20 40 60 refer to exhibit 34-1. considering the data, which of the following term to? a. 1 unit of y for 1 unit of x b. 1 unit of y for 0.75 units of x c. 1 unit of y for 0.25 units of x d. 1 unit of y for 1.50 units of x e. all of the above s of trade would both countries agree 8. it -