Minimum value of the function $f(x) = \left| {\sin \,x + \cos \,x + \tan \,x + \cot \,x + \sec \,x + \ cosec\ x} \right|$ is equal to

  • A

    $2\sqrt 2$

  • B

    $2\sqrt 2  - 1$

  • C

    $2 + 3\sqrt 2 $

  • D

    $2\sqrt 2  + 1$

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