In the diagram shown, each figure after Figure 1 is formed by joining two rectangles to the bottom of the previous figure. Each individual rectangle has dimensions 10 \mathrm{~cm} by 5 \mathrm{~cm}. If Figure n has a perimeter of 710 \mathrm{~cm}, the value of n is
Answer Choices
A. 29
B. 43
C. 66
D. 172
E. 65