Which of the Following Statements Are True of the Layers

Which of the following statements are true of the layers of the alimentary tube (Select all that apply) ?

A) The submucosa is made of stratified epithelium and blood vessels.
B) The external muscle layer typically has three layers of smooth muscle.
C) Cells of the mucosa secrete the digestive enzymes of an organ (if any) .
D) Lymphatic tissue is found in the mucosa.
E) The serosa below the diaphragm is the visceral peritoneum,and above the diaphragm it is the visceral pleura.
F) Auerbach's (myenteric) plexus is part of the enteric nervous system for the external muscle layer.