Five rectangles, A, B, C, D, and E, are arranged in a square as shown below. These rectangles have dimensions 1 \times 6,2 \times 4,5 \times 6,2 \times 7, and 2 \times 3, respectively. (The figure is not drawn to scale.) Which of the five rectangles is the shaded one in the middle?
Answer Choices
A. A
B. \mathrm{B}
C. \mathrm{C}
D. \mathrm{D}
E. \mathrm{E}