Pick out the correct statements from the following:
$I$. Electron emission during $\beta$-decay is always accompanied by neutrino.
$II$. Nuclear force is charge independent.
$III$. Fusion is the chief source of stellar energy.

  • A
    $I, II$ are correct
  • B
    $I, III$ are correct
  • C
    Only $I$ is correct
  • D
    $I, II, III$ are correct

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