46. Which of the following statements most accurately describes the neural regulation of gastrointestinal function? (A) Short reflexes are entirely contained within the enteric nervous system, whereas long reflexes involve the CNS. (B) The myenteric plexus primarily regulates secretion, while the submucous plexus controls motility. (C) The vagus nerve primarily inhibits digestive function by releasing norepinephrine onto enteric neurons. (D) Sensory input from stretch receptors in the GI tract directly stimulates gastric acid secretion without central processing. (E) The enteric nervous system requires central nervous system input to regulate peristalsis.