need help on following question:

Consider two players simultaneously deciding whether to contribute to a public good the good is said to be public because, if it is made available, a player who freerides by paying nothing gets just as much pleasure from its enjoyment as a player who paid for it. If at least one player contributes to the construction of the public good, both players will enjoy a payo of four from the public good. To ensure the public good is constructed, player 1 must pay cl or player 2 must pay 02. Assume that cl