The equation of normal to the curve $3x^2-y^2=8$ which is parallel to the line x+3y=8 is $$\begin{array}{1 1}(A)\;3x-y=8 & (B)\;3x+y+8=0\\(C)\;x+3y-8=0 & (D)\;x+3y=0\end{array}$$

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