Three circles of radius s are drawn in the first quadrant of the x y-plane. The first circle is tangent to both axes, the second is tangent to the first circle and the x-axis, and the third is tangent to the first circle and the y-axis. A circle of radius r>s is tangent to both axes and to the second and third circles. What is r / s ?
Answer Choices
A. 5
B. 6
C. 8
D. 9
E. 10