Using the bellow given Production Possibility Frontier for countryA:

1.It is possible for country A to produce the following combinations of goods and services? Give yes or no, and explain?

a.80 units of goods and 50 units of services

b.70 units of goods and 90 units of services

c.40 units of goods and 100 units of services

2.What is the opportunity cost ( in terms of services ) of producing 20 extra units of goods when country A is initially producing

a.60 units of goods

b.20 units of goods