Jack and Adam Were the Employees of Steel Co

Jack and Adam were the employees of Steel Co.Inc.Both of them performed equal work in the industry,however,the company decided to give a 40% hike to Jack because he was senior to Adam,whereas Adam was only given a 20% pay hike to his salary.In this scenario,the company wage differential is justified under the:

A) Bennett Amendment.
B) discretionary power of company.
C) public policy exception.
D) Lilly Ledbetter Fair Pay Act.