Which of the following examples best describes the signaling theory of education?

A. The hiring manager offers a job to a recent college graduate because she is more beautiful than the rest of the applicants.
B. The hiring manager offers a job to a recent college graduate because she is expected to be more productive than other applicants due to her educational attainment.
C. The hiring manager offers a job to a recent college graduate because the hiring manager has a bias toward people with college degrees.
D. The hiring manager offers a job to a recent college graduate because education is correlated with natural ability.