Question 5 Direct government controls to combat negative externalities tend to be inefficient because Not yet answered Select one: Marked out of 1.00 O a. the costs of pollution abatement are identical for all sectors Remove flag O b. firms will not abide by the rules established by the government O c. it is difficult to determine who is causing pollution O d. firms with different costs are faced with the same regulation O e. producers will adopt efficient methods of dealing with the controls