Lacteal is a lymph vessel present in

Fill in the blanks with correct options:

(i) Villi are supplied with a network of capillaries and a large lymph vessel called the ____(A)_____.

(ii) Mucosal epithelium has ___(B)___ cells which secrete mucus that helps in lubrication.

(iii) In ___(C)___ glands are also present in the submucosa.

(iv) The innermost layer lining the lumen of the alimentary canal is the ____(D)____.