Each of the following accurately describes submucosa EXCEPT one.Which one is the EXCEPTION?

A) It is the connective tissue beneath the mucosa.
B) It contains blood vessels,nerves,and connective tissue.
C) It helps determine the mobility of the mucosa
D) The anteromedial portion of the hard palate contains extensive submucosa.
E) It tends to contain fatty tissue,minor salivary glands,or both.