In a Study on Facilitated Communication,headphones Were Used to Ask

In a study on facilitated communication,headphones were used to ask the communication-impaired person one question and the facilitator a different question (unbeknownst to the two parties) .Then the answers provided by the communication-impaired person with the help of the facilitator were examined.Findings indicated that

A) the technique was successful; the facilitators conveyed the answers of their partners and ignored the questions they themselves were asked.
B) the technique was a fraud; the facilitators were deliberately faking their answers.
C) the technique was ineffective; the facilitators answered the question they were asked but believed they were answering the question asked of the others.
D) the technique was ineffective; there were technical problems with the keyboard.