【单选题】

Which of the following best defines "higher brain centers" (line 40) as the term is used in the passage
A．(A) The parts of the brain known as the somatosensory cortex, where the sensations of pain are processed

B．(B) The parts of the brain whose function is to distinguish the sensory aspects of pain from it suffering aspect
C．(C) The parts of the brain associated with pain, which appear to be insusceptible to placebo effects
D．(D) The parts of the brain that are less active in poorly hypnotizable subjects than in easily hypnotizable subjects
E．(E) The part of the brain known as the anterior cingulate cortex, whose activity is suppressed by hypnosis