Comprehension \( P \) is variable point on the line \( L=0 \). Tangents are drawn to the circle ...

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Comprehension
\( P \) is variable point on the line
\( L=0 \). Tangents are drawn to the circle \( x^{2}+y^{2}=4 \) from \( P \) to touch \( Q \) and \( R \). The parallelogram \( P Q S R \) is complicated.
If \( P=(2,3) \), then the circumcentre of \( \triangle Q R S \) is
(a) \( \left(\frac{2}{13}, \frac{7}{26}\right) \)
(b) \( \left(\frac{2}{13}, \frac{3}{16}\right) \)
(c) \( \left(\frac{4}{13}, \frac{5}{26}\right) \)
(d) None of these
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