As a Method of Pollution Control, Tradable Emissions Permits, or "Cap

As a method of pollution control, tradable emissions permits, or "cap and trade",

A) allow pollution to continue unabated, but only at a huge price to polluting firms.
B) are more effective than emissions taxes when pollution is hard to measure.
C) are not a morally acceptable method of pollution control.
D) are an example of paternalistic social regulation.
E) have the advantage of decentralized decision making (like emissions taxes) while also setting the maximum permissible level of pollution (like direct controls) .