\( A B \) and \( C D \) are two equal and parallel chords of the ellipse \( \frac{x^{2}}{a^{2}}+...

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\( A B \) and \( C D \) are two equal and parallel chords of the ellipse
\( \frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}=1 \). Tangents to the ellipse at \( A \) and \( B \) intersect at
\( P \) and tangents at \( C \) and \( D \) at \( Q \). The line \( P Q \)
(a) Passes through the origin
(b) Is bisected at the origin
(c) Cannot pass through the origin
(d) Is not bisected at the origin
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