Question

"A parallelogram is a rectangle if and only if it has a right angle."

If this statement is true, then which of the following statements must also be true?

A. A parallelogram is not a rectangle if and only if it does not have a right angle. B. A parallelogram is a rectangle if and only if it does not have a right angle.
C. A parallelogram is not a rectangle if and only if it has a right angle.
D. A parallelogram has a right angle if and only if it is not a rectangle.

Answer 1

` ii think it’s A but im not sure