1. (A) a suboptimal outcome in which each agent follows only his or her self-interest and everyone is worse o§ than if they cooperated.
2. (B) a suboptimal outcome in which each agent follows the groups interest and everyone is worse o§ than if they cooperated. 
3. (C) an optimal outcome in which each agent follows only his or her self-interest and everyone is worse o§ than if they cooperated.
4. (D) a suboptimal outcome in which each agent follows only his or her self-interest and everyone is better o§ than if they cooperated.