In the circle below, chord $$\overline{AB}$$ is extended to meet the tangent $$\overline{DE}$$ at D. If $$\overline{AB}$$ = 9 cm and $$\overline{BD}$$ = 3 cm, find the length of $$\overline{DE}$$.

A

5 cm

B

4 cm

C

$$\sqrt{27}$$ cm

D

6 cm