A right triangle contains the right angle between the sides 5 cm and 7 cm. A cone is generated by revolving about the side 5 cm. The volume of this cone is:

A

$$51\frac{2}{3}\pi$$ $$cm^3$$

B

$$71\frac{2}{3}\pi$$ $$cm^3$$

C

$$81\frac{2}{3}\pi$$ $$cm^3$$

D

$$61\frac{2}{3}\pi$$ $$cm^3$$