How do tit for tat and trigger strategies differ in their approach to maintaining cooperation?

• A. Both strategies encourage immediate cheating.
• B. Tit for tat allows for retaliation based on previous actions, while trigger strategy enforces permanent retaliation after one cheat.
• C. Tit for tat discourages cooperation, while trigger strategy encourages it.
• D. Both strategies result in permanent cooperation.

Answer: (B)