(This question refers to the MRU video 'Human Capital and Signaling'.) Which of the following is true about the earnings of workers with different college degrees?

Select one:

a.Economics majors earn about the same as other social science majors.

b.The earnings of social science majors and STEM majors are about equal.

c.The only majors that earn more than economics majors are all non-STEM majors.

d.Economics majors earn more than any other non-STEM major.