$4 \,\,sin5^o \,\,sin55^o \,\,sin65^o$ has the values equal to

  • A

    $\frac{{\sqrt 3  + 1}}{{2\sqrt 2 }}$

  • B

    $\frac{{\sqrt 3  - 1}}{{2\sqrt 2 }}$

  • C

    $\frac{{\sqrt 3  - 1}}{{\sqrt 2 }}$

  • D

    $\frac{{3\left( {\sqrt 3  - 1} \right)}}{{2\sqrt 2 }}$

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