Let C1 and C2 be the centres of the circles x2+y2−2x−2y−2=0 and x2+y2−6x−6y+14=0 respectively. If P and Q are the points of intersection of these circles, then the area (in sq. units) of the quadrilateral PC1QC2 is : [JEE-MAIN ONLINE-2019]
(1) 8
(2) 6
(3) 9
(4) 4