The Average Quality of Labor Has Increased,partly Because the Demand

The average quality of labor has increased,partly because the demand for education and health care are:

A) income elastic-rising national income generates more than proportional increases in spending on these items
B) income elastic-falling national income generates more than proportional increases in spending on these items
C) income inelastic-rising national income generates more than proportional increases in spending on these items
D) income inelastic-rising national income generates less than proportional increases in spending on these items