How does Mesmer react when Franklin and others claim that animal magnetism does not exist? A. He argues that his critics have been hypnotized by a force even stronger than animal magnetism.

B. He uses animal magnetism on himself to prove to the non-believers that it works.

C. He blames his assistant for not using animal magnetism correctly and he returns to Germany.

D. He insists on continuing to practice what he calls "the medicine of the imagination" to help his patients.