The figure below shows a large unshaded circle with a number of smaller unshaded and shaded circles in its interior. What fraction of the interior of the large unshaded circle is shaded?
Answer Choices
A. \dfrac{1}{4}
B. \dfrac{11}{36}
C. \dfrac{1}{3}
D. \dfrac{19}{36}
E. \dfrac{5}{9}