Which sentence is​ correct?
A. The worker position is​ that, as​ employees, they have not been treated fairly.
B. The​ worker's position is​ that, as​ employees, they have not been treated fairly.
C. The​ workers's position is​ that, as​ employees, they have not been treated fairly.
D. The​ workers' position is​ that, as​ employees, they have not been treated fairly.