If the income elasticity of demand is ________ zero,then the good is ________.

a. greater than; normal

b. less than; normal

c. equal to; unit elastic  

d. equal to; perfectly elastic

As the costs of higher education rises, which of thefollowing certainly occurs?

a. More students will attend classes.

b. Opportunity costs of education are higher.

c. More choices exist.

d. Class size is lower.