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Q)

$\frac{\sqrt{8 +\sqrt{28} } + \sqrt{8 - \sqrt{28}}}{\sqrt{8 +\sqrt{28} } - \sqrt{8 - \sqrt{28}}} $ is equal to :


( A ) $\sqrt{7}$
( B ) $\sqrt{2}$
( C ) $7$
( D ) $2$

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