A circle passes through the three vertices of an isosceles triangle that has two sides of length 3 and a base of length 2 . What is the area of this circle?

**Answer Choices**

A. 2 \pi

B. \dfrac{5}{2} \pi

C. \dfrac{81}{32} \pi

D. 3 \pi

E. \dfrac{7}{2} \pi