单选题 The passage is primarily concerned with

• (A) illustrating the extent to which the physiological principles behind taste mirror those behind vision
• (B) contrasting the available evidence for the labeled-line and across-neuron theories of taste
• (C) describing the evolution of theories concerning the neurological mechanisms which determine taste
• (D) demonstrating the superiority of holistic models over component models in analyzing neuron function
• (E) showing that individual neurons play a negligible role in the physiological mechanisms of perception