Tom, the manager and owner of a small company, believes in the signaling theory of education, not the human capital theory. As such, Tom would be most likely to agree with which of the following quotes?

a. "We encourage our employees to enroll in night classes to improve their on-the-job productivity.".
b. "We encourage our employees to participate in online seminars to learn new skills.".
c. "We pay higher wages to employees who have MBAs because, on average, their job performance is better than similar employees who do not have MBAs.".
d. "When we interview prospective employees at job fairs, we are looking for college graduates because they have the determination and follow-through to finish what they start.".

d