Verified Answer :

arthurpdc

\(
\dfrac{5}{\sqrt{11}}=\dfrac{5}{\sqrt{11}}\times\dfrac{\sqrt{11}}{\sqrt{11}}=\dfrac{5\sqrt{11}}{\sqrt{11^2}}=\boxed{\dfrac{5\sqrt{11}}{11}}\\\\
\text{The answer is B.}
\)

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