Which of the following is a true statement?

a: it is possible for two rectangles to have the same area, but only if they also have the same perimeter.

b: it is possible for two rectangles to have the same area without having the same perimeter.

c: it is possible for two squares to have the same area without having the same perimeter.

d: it is possible for two squares to have the same perimeter without having the same area.