The ellipse $$E_1 : \frac{x^2}{9} + \frac{y^2}{4} = 1$$ is inscribed in a rectangle R whosesides are parallel to the coordinate axes. Another ellipse $$E_2$$ passing through the point(0, 4) circumscribes the rectangle R. The eccentricity of the ellipse $$E_2$$ is

A

$$\frac{\sqrt{2}}{2}$$

B

$$\frac{\sqrt{3}}{2}$$

C

$$\frac{1}{2}$$

D

$$\frac{3}{4}$$