IFC Is Commonly Used to Help with the Reduction of Pain

IFC is commonly used to help with the reduction of pain perception. One of the advantages of IFC is the ease of setting it up in a way that will perpetuate the sensation throughout the treatment area. Which of the following most accurately describes the mechanism that IFC uses to accomplish this?

A) IFC units have a setting labeled sweep or scan.
B) Sweep moves the third line of current through the treatment area without having to adjust intensities.
C) After about 5 minutes, the intensity of the IFC will increase automatically, which decreases the likelihood that the patient will stop feeling it.
D) There is no such control on an IFC device. The clinician must monitor the device just like any other form of ES to ensure that the sensation perpetuates throughout the treatment area.