The Major Advantage of FMRI Over PET Is That FMRI

The major advantage of fMRI over PET is that fMRI:

A) measures both brain structure and function.
B) allows for cause and effect determinations between brain function and behavior to be made.
C) does not involve the use of an expensive machine that generates magnetic pulses.
D) allows for the measurement of brain activity on a much shorter time scale.