Mr. Paulson has a rectangular fenced area that has a length of 24 feet and a width of 9 feet. He plans to create a new rectangular fenced area using the original fence materials. He is going to remove x feet from the length and add it to the width.
Which expression below is one way to represent the difference, in square feet, between the new fenced area and the original fenced area?
A x2 + 14x
B x2 + 24x
C -x2 + 33x
D -x2 + 15x