The value of the expression

$\frac{{\left (sin 36^o + cos 36^o - \sqrt 2  sin 27^o)( {\sin {{36}^0} + \cos {{36}^0} - \sqrt 2 \sin {{27}^0}} \right)}}{{2\sin {{54}^0}}}$ is less than

  • A

    ${\cos {{36}^o}}$

  • B

    $\cos 67\frac{{{1^o}}}{2}$

  • C

    $\cos {9^o}$

  • D

    $\cos {72^0}$

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