Peter, the first-line manager for the largest, most profitab…

Peter, the first-line manager for the largest, most profitable division on Jill’s team, feels as though it was not fair that he received the same $1,000 as Nathan, a first-line manager who has been known as an underperformer, even though he manages a small team. Peter believes his bonus should be higher, based upon his strong performance and team size. Which ethical rule did he most likely use to come to this decision?