Which of the following is not included in the layers of the gallbladder? A. Mucosal lining (single layer of columnar epithelial cells) B. Muscularis mucosa C. Peritoneal covering (except where the...

Which of the following is not included in the layers of the gallbladder?

A. Mucosal lining (single layer of columnar epithelial cells)

B. Muscularis mucosa

C. Peritoneal covering (except where the gallbladder is directly adjacent to the liver)

D. Subserosal fat

E. Fibromuscular layer