Select the correct option:
$(1)$ The non-enzymatic digestive juice is Saliva / Bile.
$(2)$ The Caecum / Colon is a vestigial organ in humans.

• A
  $(1)$ Saliva,$(2)$ Caecum
• B
  $(1)$ Bile,$(2)$ Caecum
• C
  $(1)$ Saliva,$(2)$ Colon
• D
  $(1)$ Bile,$(2)$ Colon