Which of the Following is NOT a Tunica of the Digestive

Question

Which of the following is NOT a tunica of the digestive tract?
A) Submucosa
B) Serosa or adventitia
C) Mucosa
D) All of the above are tunica of the digestive tract

Accepted Answer

All the options listed (submucosa, serosa or adventitia, and mucosa) are tunics or layers of the digestive tract.