$$\triangle ABC \sim \triangle DEF$$. If the areas of $$\triangle ABC$$ and $$\triangle DEF$$ are 100 cm$$^2$$ and 81 cm$$^2$$, respectively and the altitude of $$\triangle DEF$$ is 6.3 cm, then the corresponding altitude of $$\triangle ABC$$ is:

A

9 cm

B

5.6 cm

C

7 cm

D

8.4 cm