Assume an economy has two jobs, one that requires education and one that does not. If the wage difference?

Question

Assume an economy has two jobs, one that requires education and one that does not. If the wage difference between the two jobs is much higher than that required for individual workers to make a reasonable return on their investment in education it is likely that
a) the wage rate for jobs that require education will begin to rise
b) supply of workers for the jobs that require education will rise
c) demand for workers for the jobs that require education will rise
d) all of the above

Answer 1

b