A Characteristic of a Public Good or Service Is

A characteristic of a public good or service is

A) That no individual can identify specifically the part of it that he or she consumes
B) Once the good is provided,it is difficult or impossible to exclude anyone from using it
C) If it is provided privately,it generates a "free-rider" problem
D) One person's use does not decrease the quantity available for others
E) All of the above