Using FMRI, Researchers Determined That Subjects Were Conscious of Their

Using fMRI, researchers determined that subjects were conscious of their decision to press a button

A) well before any brain activity suggested a decision.
B) about 5 seconds after activation of the motor cortex.
C) at about the same time as activity in the decision-making regions of their brains.
D) about 3 seconds after activity in the decision-making regions of their brains.