Four congruent rectangles and a square are assembled without overlapping to form a large square, as shown. Each of the rectangles has a perimeter of 40\:cm. The total area of the large square is
Answer Choices
A. 160\:cm^2
B. 200\:cm^2
C. 400\:cm^2
D. 800\:cm^2
E. 1600\:cm^2