Properties:
The diagonals of a parallelogram always bisect each other.
The diagonals of a quadrilateral just intersect in the case of a convex quadrilateral.
The diagonals of a rectangle bisect each other. The diagonals are always equal.
The diagonals of a rhombus bisect each other at 90°.
Hence The diagonals of a Rhombus are always perpendicular.
Option D) is the right answer.