5. Four farmers are deciding whether to contribute to the maintenance of an irrigation project. Foreach farmer, the cost of contributing to the project is $10. But when any one farmer contributes, allfour of them will benefit from an increase in their crop yields, in particular each gains additional$8. Which of the following statements is correct?
(A) If all the farmers are selfish, none of them will contribute.
(B) There are multiple Nash equilibria in this game.
(C) If Kim is altruistic and contributes $10, the others might contribute too, even if they areselfish.
(D) If the farmers have to reconsider this decision every year and consider infinite horizon ofplanning, they will never choose to contribute to the project if they are selfish.