A plastics manufacturing plant emits pollution into the Big River. This leads to higher costs and disruption for fishermen on the river, for which they are not compensated. In this situation: A) too little of society's resources is being used to produce plastic. B) too much of society's resources is being used to produce plastic. C) the ideal amount of society's resources is being used to produce plastic. D) there is an external benefit to society from plastic production.