There Is No Doubt That Animal Rights Activists Have Contributed

Multiple Choice

There is no doubt that animal rights activists have contributed to the recent demand for fur. Every time they denounce wearing fur, it becomes more hip and forbidden to wear, ironically triggering a greater demand for it. We should hold animal rights activists responsible for this unfortunate development.
Which of the following is an assumption required by the argument?

A) Even unintended consequences are foreseeable.
B) If animal rights activists stop their campaigns, demand for fur will decrease.
C) Demand for fur cannot increase without a change in its image.
D) Demand for fur is not a positive development.
E) People can be held responsible for something they did not intend.