In What Way Did the Experiments Performed by Bernheim and Lièbault

In what way did the experiments performed by Bernheim and Lièbault provide support for the psychogenic perspective of abnormality?

A) Using hypnosis, they could produce artificial symptoms such as blindness in healthy subjects.
B) Using small amounts of electrical current, they could induce "false" psychological problems in healthy subjects.
C) Using biofeedback systems, they could reduce anxiety symptoms in subjects.
D) Using guided imagery, they could cure patients with a variety of psychological disorders.