As a country grows (GDPpp), we would expect households and governments to spend more on children's health and education. In order for this to happen, which of the following needs to occur? A) As incomes rise, families need to spend more on nutritious food for their children. B) Governments need to direct increased tax revenues to social programs. C) Governments need to provide subsidized health and education. D all of the above E) none of the above