When Social Costs of Producing or Consuming a Good Exceed

When social costs of producing or consuming a good exceed private costs:

A) a positive externality exists.
B) an inefficiently high quantity of a good will be produced and consumed.
C) the direct consumers of the good will bear the external costs.
D) the individuals involved in the production of the good do not bear the private costs.
E) the quantity of the good produced will be less than the socially efficient level.