As the new regional manager for a clothing chain, you want to learn as much about the company as possible. In doing your research, you decide to review employment data for the past two years and discover that no one over $45$ has been promoted during that time. This information is surprising since almost $40\%$ of the employees who should have been eligible for promotion were over $45.$ Answer each of the following questions with a short essay.

a$.$ What law has been violated?

b$.$ Is there evidence of disparate treatment, disparate impact, both, or neither? Make a case for your answer.

c$.$ As the new regional manager, what should you do$?$