If $A = \begin{bmatrix} 1 \\ 2 \\ 3 \end{bmatrix}$,then $AA' = $

  • A
    $[14]$
  • B
    $\begin{bmatrix} 1 \\ 4 \\ 3 \end{bmatrix}$
  • C
    $\begin{bmatrix} 1 & 2 & 3 \\ 2 & 4 & 6 \\ 3 & 6 & 9 \end{bmatrix}$
  • D
    None of these

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