If $\vec{A} = 3\hat{i} + 4\hat{j}$ and $\vec{B} = 6\hat{i} + 8\hat{j}$,where $A$ and $B$ are the magnitudes of vectors $\vec{A}$ and $\vec{B}$ respectively,which of the following is incorrect?

  • A
    $\vec{A} \times \vec{B} = 0$
  • B
    $\frac{A}{B} = \frac{1}{2}$
  • C
    $\vec{A} \cdot \vec{B} = 40$
  • D
    None of these

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