Of the following layers which one forms rugae in stomach and villi in intestine of humans?

Read the following statement and select the correct option:

Statement-1: The mucosal layer forms irregular folds (rugae) in the stomach and small finger-like folding called “villi” in the small intestine.

Statement-2: The cells lining the villi produce numerous microscopic projections called "microvilli", giving a brush-border appearance.

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)____.