Property Right Enforcement and Markets Can Be Imperfect, So Environmental

Property right enforcement and markets can be imperfect, so environmental regulations are often used to correct market failures that result in environmental damages. But governmental regulation itself can be imperfect because

A) both environmental harms and the benefits of reducing them are uncertain and difficult to measure.
B) regulation overrides the market, and therefore the regulators do not have market information on the costs imposed on damaged parties or those required to reduce the damages.
C) special interests often use the regulatory process to obtain political favors that waste resources and conflict with the stated objectives of the regulation.
D) all of the above are true.