A 3-4-5 right triangle is inscribed in circle A, and a 5-12-13 right triangle is inscribed in circle B. What is the ratio of the area of circle A to the area of circle B?
Answer Choices
A. \dfrac{9}{25}
B. \dfrac{1}{9}
C. \dfrac{1}{5}
D. \dfrac{25}{169}
E. \dfrac{4}{25}