In a quadrilateral ABCD, the diagonals bisect each other at point T. Based on the given information which statement is presented first to show that side AB is equal to side BC?


A: Angle ADT is congruent to Angle ATB.

B: Angle ATB is congruent to Angle CTB.

C: Side BC is equal to the diagonal AC of the quadrilateral.

D: Side AB is equal to the diagonal DB of the quadrilateral.