2001 Fermat Problem 15

A circle is tangent to the y-axis at (0, 2), and the larger of its x-intercepts is 8. The radius of the circle is

\textbf{(A)}\ \frac{9}{2}\quad \textbf{(B)}\ \sqrt{17}\quad \textbf{(C)}\ \frac{17}{4}\quad \textbf{(D)}\ \frac{15}{4}\quad \textbf{(E)}\ \frac{\sqrt{17}}{2}

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