The following figures show the first two steps of a proof of the Pythagorean theorem. Which of the following statements about this proof is false?
a
b
Step 1
Step 2
O A. The triangles created in step 2 have the same area.
O B. Rotating the triangles does not change their areas.
O c. The area of the figure in step 1 is (a + b)2
OD. The areas of the figures in step 1 and step 2 are equal.