According to Murphy's "How Gary Becker saw the Scourge of Discrimination", which of the following may be a way for non-discriminating firms to increase their profits?

• Non-discriminating firms can hire white workers to appeal to their customers, if their customers have a sufficiently large preference for white workers
• Non-discriminating firms can hire Black workers, who have a lower equilibrium wage rate
• Non-discriminating firms can move to areas without minority populations
• Non-discriminating firms should hire fewer white or Black workers than discriminating firms

https://www.chicagobooth.edu/review/how-gary-becker-saw-the-scourge-of-discrimination#:~:text=Becker%20predicted%20that%20over%20time,were%20allocated%20randomly%20across%20employers.