A PET-Scan Study That Was Featured in Focus on Neuroscience

A PET-scan study that was featured in Focus on Neuroscience: The Mysterious Placebo Effect demonstrated that a placebo painkiller:

A) does not relieve pain and does not seem to affect brain regions.
B) relieves pain but activates different brain areas than genuine painkillers.
C) actually increases the sensation of pain.
D) activates the same brain areas as genuine painkillers.