Which of the following statements is true?
a. The body needs more time to digest a high-carbohydrate meal than a high-fat meal.
b. A thin layer of chyme protects the lining of the digestive tract from being broken down by enzymes.
c. Hydrochloric acid (HCl) begins the partial digestion of fats in the small intestine.
d. Acid reflux often results when the gastroesophageal sphincter fails to close properly