When Firm X closed, Firm Y (which offers no training to its workers) hired many of X's employees after they had completed a lengthy, full-time retraining program offered by a local agency.

The city's Equal Opportunity Commission noticed that the workers Employer Y hired from X were predominantly young, and it launched an age-discrimination investigation. During this investigation, Employer Y claimed that it hired all the applicants from X who had successfully completed the retraining program, without regard to age.

From what you know of human capital theory, does Employer Y's claims sound credible?