Good vision depends on adequate intake of carotene-rich food. Select the best option from the following statements:
$(1)$ Vitamin $A$ derivatives are formed from carotene.
$(2)$ The photopigments are embedded in the membrane discs of the inner segment.
$(3)$ Retinal is a derivative of vitamin $A$.
$(4)$ Retinal is a light-absorbing part of all the visual photopigments.

  • A
    $(1), (3)$ and $(4)$
  • B
    $(1)$ and $(3)$
  • C
    $(2), (3)$ and $(4)$
  • D
    $(1)$ and $(2)$

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