The chords passing through \( L(2,1) \) intersects the hyperbola \(...

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The chords passing through \( L(2,1) \) intersects the hyperbola \( \frac{x^{2}}{16}-\frac{y^{2}}{9}=1 \) at \( P \) and \( Q \). If the tangents
\( \mathrm{P} \) at \( P \) and \( Q \) intersects at \( R \) then Locus of \( R \) is
(A) \( x-y=1 \)
(B) \( 9 x-8 y=72 \)
(C) \( x+y=3 \)
(D) \( 9 x+8 y=7 \)
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