Voluntary contributions toward a public good Neha and Teresa are considering contributing toward the creation of a building mural. Each can choose whether to contribute $300 to the building mural or to keep that $300 for a cell phone. Since a building mural is a public good, both Neha and Teresa will benefit from any contributions made by the other person. Specifically, every dollar that either one of them contributes will bring each of them $0.70 of benefit. For example, if both Neha and Teresa choose to contribute, then a total of $600 would be contributed to the building mural. So, Neha and Teresa would each receive $420 of benefit from the building mural, and their combined benefit would be $840. This is shown in the upper left cell of the first table. Since a cell phone is a private good, if Neha chooses to spend $300 on a cell phone, Neha would get $300 of benefit from the cell phone and Teresa wouldn't receive any benefit from Neha's choice. If Neha still spends $300 on a cell phone and Teresa chooses to contribute $300 to the building mural, Neha would still receive the $210 of benefit from Teresa's generosity. In other words, if Neha decides to keep the $300 for a cell phone and Teresa decides to contribute the $300 to the public project, then Neha would receive a total benefit of $300 + $210 = $510, Teresa would receive a total benefit of $210, and their combined benefit would be $720. This is shown in the lower left cell of the first table. Complete the following table, which shows the combined benefits of Neha and Teresa as previously described. Teresa Contributes Doesn't contribute entributes 5840 $ Neha Doesn't contribute $720 $ of the four cells of the table, which gives the greatest combined benefits to Neha and Teresa? When Neha contributes to the building mural and Teresa doesn't, or vice versa When both Neha and Teresa contribute to the building mural When neither Neha nor Teresa contributes to the building mural