Need help with macroeconomics?

Please answer the following questions and explain how you got your answer. Very confused about how this all works. a) How many units can be produced if a country uses all of its resources on health care? b) How many units can be produced if a country uses all of its resources on education? c) If a country is currently producing 11 units of health care and 16 units of education, what is the opportunity cost of producing 5 more units of education?