54 points!!!!!!!explainGiven: Parallelogram ABCD, AB = AD, and

AC⊥BD

. Which statement can be proved?


A.

ABCD is a rectangle, but not necessarily a square.


B.

ABCD is a parallelogram, but not necessarily a rhombus.


C.

ABCD is a rhombus, but not necessarily a square.


D.

ABCD is a square.