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Let \( C_{1} \) and \( C_{2} \) be the centres of the circles \( x^{2}+y^{2}-2 x-2 y-2=0 \) and \( x^{2}+y^{2}-6 x-6 y+14=0 \) respectively. If \( P \) and \( Q \) are the points of intersection of
\( P \) these circles, then the area (in sq units) of the

W quadrilateral \( P C_{1} Q C_{2} \) is
(2019 Main, 12 Jan I)
(a) 8
(b) 4
(c) 6
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