In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:
Assertion (A) : In the given figure, a quadrilateral
\(ABCD\) is taken to circumscribe a circle, i.e., a circle touches all its four sides., as shown. Then \(AB + BC = AD + DC\).
Reason (R) : In two concentric circles, the chord of the larger circle that touches the smaller one is cut into two equal parts at the point of contact.