Question

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

I dont remember going over quadrilaterals so i need help pleaseee