Please show and explain work

5. (4 points total) Abigail and Brenda are the only members of society. The table below shows their marginal benefit schedules for defense satellites. A defense satellite is a public good. Brenda's Marginal Benefit (Dollars) Abigail's Marginal Benefit (Dollars) Quantity (Satellites) (2 points) If the marginal cost of each defense satellite is constant at $50, what is the efficient quantity of defense satellites? Explain and show your calculations. (2 points) If provision of defense satellites is left to a private market, what quantity would t society choose? Explain