Which of the following statements are correct for the iris?
$(I)$. The ciliary body extends forward to form the iris.
$(II)$. It is a pigmented and opaque structure.
$(III)$. It is the visible coloured portion of the eye.
Choose the correct option.

  • A
    $(I)$ and $(II)$
  • B
    $(I)$ and $(III)$
  • C
    $(II)$ and $(III)$
  • D
    $(I), (II)$ and $(III)$

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