$A$ and $B$ possess unequal dimensional formula then following operation is not possible in any case:-

  • A

    $log (A -B)$

  • B

    $sin (A + Bx)$

  • C

    $e^{(AB)}$

  • D

    $\tan \left[ {\frac{A}{B}\left( {\frac{B}{A}n} \right)} \right]$

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