Which of the following statements are correct for a nerve cell?
$(I)$. Each neuron has a cell body
$(II)$. Each neuron has a single axon
$(III)$. Neurons are the functional units of the nervous system
Select the correct option.

  • A
    $(I)$ and $(II)$
  • B
    $(II)$ and $(III)$
  • C
    All are incorrect
  • D
    All are correct

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