Which of the Following Purported Externalities in Fact Does Not

Multiple Choice

Which of the following purported externalities in fact does not distort the allocation of resources?
I.An individual's unwillingness to cut his or her own lawn in an otherwise immaculately kept neighborhood.
II.Smoke produced by a new firm in an area which raises the costs of other firms.
III.A new firm's bidding up skilled wages in an area,thereby raising costs of other firms.
IV.An individual's unwillingness to obtain job training,thereby lowering the total GNP.
Possible choices:

A) I,III,and IV.
B) III and IV.
C) III only.
D) IV only.