Denzel is working on a problem for his geometry class. He has to determine if quadrilateral ABCD is a parallelogram, and if so, what kind.

He determines that the diagonals of the quadrilateral have the following characteristics:

- the slopes are opposite reciprocals

- the diagonals have the same midpoint

- the diagonals are not congruent

How would you classify the shape?

A
Square

B
Rhombus

C
Rectangle

D
Quadrilateral