Everyone in the neighborhood has been complaining about the deteriorating condition of the park, but nobody has cleaned it up. Why not?

A.There is an excess supply of parks in the neighborhood.

B.The reservation price for a clean park exceeds the cost of cleaning it.

C.No single person’s reservation price to clean the park makes it worth cleaning it.

D.There is an excess demand for parks in the neighborhood.

正确答案：No single person’s reservation price to clean the park makes it worth cleaning it.