The area of the parallelogram whose sides are represented by the vectors $\hat j + 3\hat k$ and $\hat i + 2\hat j - \hat k$ is

  • A

    $\sqrt {61} $ sq.unit

  • B

    $\sqrt {59} $ sq.unit

  • C

    $\sqrt {49}  $ sq.unit

  • D

    $\sqrt {52} $ sq.unit

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