Given $A =\hat{ i }+\hat{ j }+\hat{ k }$ and $B =-\hat{ i }-\hat{ j }-\hat{ k }$, then $( A - B )$ will make angle with $A$

  • A

    $0^{\circ}$

  • B

    $180^{\circ}$

  • C

    $90^{\circ}$

  • D

    $60^{\circ}$

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