The graph shows costs and projected costs at private
four-year colleges, public four-year colleges, and
public two-year colleges.
$70,000
$60,000
$50,000
$40,000
$30,000
$20,000
$10,000
$0
9246
0
2
0
24680246
Which best summarizes the increase in costs at
public four-year colleges over the past 30 years?

A. They have increased more than private four-year
colleges but less than public two-year colleges.

B. They have increased less than private four-year
colleges and public two-year colleges.

C. They have increased more than private four-year
colleges and public two-year colleges.

D. They have increased more than public two-year
colleges but less than private four-year colleges.