The normal flow of contents in the human alimentary canal is ________.

A)pharynx, oral cavity, esophagus, stomach, large intestine
B)oral cavity, pharynx, esophagus, stomach, small intestine, large intestine
C)esophagus, pharynx, stomach, large intestine, small intestine
D)oral cavity, esophagus, stomach, large intestine, small intestine