If $x=\large\frac{\sqrt 5+\sqrt 3}{\sqrt 5-\sqrt 3}$ and $y=\large\frac{\sqrt 5-\sqrt 3}{\sqrt 5+\sqrt 3}$ then the value of $x+y+xy$ is _____

Question

$\begin{array}{1 1}(A) \;9\\(B)\;5 \\(C)\;17 \\(D)\;7 \end{array}$