If a College Education Did Not Increase Worker Productivity

Multiple Choice

If a college education did not increase worker productivity,

A) no one would go to college.
B) the earnings of workers with a college education would tend to be the same as for workers without a college degree.
C) the earnings of workers with a college education would still be higher than for those without a college degree.
D) the earnings of workers with a college education would be lower than for those without a college degree.