Which of the following statements are correct?
$(i)$ $Ramus$ $dorsalis$ branch of spinal nerve contains sensory as well as motor nerve fibres.
(ii) The preganglionic nerve fibres arise from the entire spinal cord.
(iii) There are $31$ pairs of spinal nerves.
(iv) The somatic nervous system transmits impulses from $CNS$ to visceral organs.
$(v)$ Reflex action is a sudden,thoughtful,and voluntary response to the applied stimulus.
Select the correct option.

  • A
    $(i)$ and (ii) only
  • B
    (ii) and (iv) only
  • C
    $(i)$ and (iii) only
  • D
    (iii) and $(v)$ only

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$\quad\quad \quad P\quad\quad\quad Q$

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