Therapeutic touch (TT)is a type of "energy" medicine that involves the practitioner moving his or her hands over the energy field of the patient,without actually touching the patient,to redirect the energy field and heal the patient.Which of the following would be the first concept to investigate to help evaluate the claims of TT practitioners?

A) documentable and repeatable evidence that an external energy field actually exists for humans
B) documentable and repeatable evidence that any existing energy field can be manipulated by merely passing hands over it
C) documentable and repeatable evidence that TT practitioners can, without seeing their subjects, actually feel the energy field of a patient
D) documentable claims by TT practitioners and their patients that the patients thought they felt better after being treated by the TT practitioner even though there was no change in their diseases