Which of the Following Statements Is True of the Electroencephalogram

Which of the following statements is true of the electroencephalogram (EEG) ?

A) It is a measure of the brain's electrical activity and is used to learn about the brain's development in infancy.
B) It uses very low levels of near-infrared light to monitor changes in blood oxygen in infants' brains.
C) It is an imaging technique that uses strong magnetic fields to generate images of the organs in the body.
D) It is an imaging technique that uses computer-processed X-ray measurements to produce cross-sectional images of the organs in the body.