There are four basic layers of the digestive tract. Arrange them in order from the lumen (deep to superficial) .

A) submucosa, serosa, muscularis externa, and mucosa
B) mucosa, submucosa, muscularis externa, and serosa
C) muscularis externa, serosa, mucosa, and submucosa
D) serosa, mucosa, submucosa, and muscularis externa

Muscularis Externa

A layer of muscle in the walls of various organs, including the stomach and intestines, responsible for movement.

Submucosa

Layer of tissue in the digestive tract lying just beneath the mucosa, containing blood vessels, nerves, and glands.

Serosa

Another term for serous membrane, the smooth tissue lining certain internal cavities of the body.