In Bohr's atomic model of hydrogen,let $K$,$P$ and $E$ be the kinetic energy,potential energy and total energy of the electron,respectively. Choose the correct option when the electron undergoes transitions to a higher level.

  • A
    All $K$,$P$ and $E$ increase.
  • B
    $K$ decreases,$P$ and $E$ increase.
  • C
    $P$ decreases,$K$ and $E$ increase.
  • D
    $K$ increases,$P$ and $E$ decrease.

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