Which of the following statements is correct regarding the reabsorption of $K^+$ (Potassium) in the nephron?

  • A
    Ions are reabsorbed in the proximal convoluted tubules.
  • B
    Transport is primarily by diffusion.
  • C
    Reabsorption in tubules is insulin-dependent.
  • D
    Transport depends on $Na^+$ transport.

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