Which Statement Below Is Not True About an Electroencephalogram (EEG)

Which statement below is not true about an electroencephalogram (EEG) ?

A) It tells us how neural activity changes over a very brief period of time
B) It picks up minute electromagnetic activity generated by the electro-chemical processes occurring at the surface of the cortex of the brain
C) It is more precise in telling us the location of activity in the brain compared with MRI
D) It can be a net of 128 or 256 tiny electrodes
E) Usually, an EEG system is less expensive than an MRI system.