When $\psi_A$ and $\psi_B$ are the wave functions of atomic orbitals,then $\sigma^*$ is represented by :

  • A
    $\psi_A - 2 \psi_B$
  • B
    $\psi_A - \psi_B$
  • C
    $\psi_A + 2 \psi_B$
  • D
    $\psi_A + \psi_B$

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