Which one of the following is a way to get out of a repeated Prisoner's Dilemma Nash Equilibrium?

A) ​Be envious
B) Try to decrease your competitor's pie while increasing your own
C) Do not be envious-focus on your slice of the profit pie
D) ​All of the above

The best choice is to not be envious and to focus on your own slice of the profit pie. This means cooperating with your competitor and striving for a mutually beneficial outcome. By doing so, you may be able to build trust and establish a new equilibrium that is more favorable for both parties. Trying to decrease your competitor's pie while increasing your own (option B) is not a sustainable solution as it could lead to retaliation and an endless cycle of tit-for-tat behavior. Being envious (option A) is also not a productive approach as it can lead to short-term gains but can ultimately harm both parties in the long run.