If a quadrilaterals diagonals bisect its vertices, what kind of quadrilateral must it be?

A - Rhombus

B - trapezoid

C - rectangle

D - parallelogram

Option A, This type of quadrilaterals is a polygon and is called Rhombus because all sides are equal, each pair of acute and obtuse angles are opposite, their diagonals are distinct and perpendicular to each other, bisectors and have an inscribed circumference.