In Stephen Kosslyn's Research on the Brain Activity Associated with Hypnotic

In Stephen Kosslyn's research on the brain activity associated with hypnotic states,he asked hypnotically susceptible participants to imagine adding colour to a gray square.The results of his study indicated that when participants were hypnotized:

A) the colour processing areas in neither the left nor right hemispheres were active.
B) only the colour processing areas in their right hemispheres were active.
C) only the colour processing areas in their left hemispheres were active.
D) the colour processing areas in both their left and right hemispheres were active.