Question

A quadrilateral ABCD has four right angles. The diagonals bisect each other.

Based on the given properties of the quadrilateral ABCD, which of these is a valid conclusion?

Quadrilateral ABCD must be a square.

Quadrilateral ABCD must be a square or a rectangle.

Quadrilateral ABCD must be a rhombus.

Quadrilateral ABCD must be a rectangle or a rhombus.

Answer 1

I am pretty sure the answer is:
Quadrilateral ABCD must be a square or a rectangle