A rhombus is inscribed in the region common to the two circles x² + y² - 4x - 12 = 0 and x² + y² + 4x - 12 = 0 with two of its vertices on the line joining the centres of the circles . The area of the rhombous is :
(A) 8√3 sq.units
(B) 4√3 sq.units
(C) 16√3 sq.units
(D) of these
