(Table: Street Cleanings) Peter and Wendy Both Benefit from Having

(Table: Street Cleanings) Peter and Wendy both benefit from having cleaner streets.The table Street Cleanings shows the relationship between the number of street cleanings per month and the total benefit they get.Suppose that the marginal cost of street cleaning is $18 per cleaning.Then:

A) if the city decided to clean the streets only once per month, Peter would be willing to pay the entire cost of the cleaning.
B) if the city decided to clean the streets only once per month, Wendy would be willing to pay the entire cost of the cleaning.
C) if Wendy and Peter were the only people in society, the efficient number of street cleanings would be one per month.
D) if Wendy and Peter were the only people in society, the efficient number of street cleanings would be at least two per month.