The radii of the ends of a frustum of a cone 7 cm high are 5 cm and 3 cm. Find its volume correct to one decimal place. (Use $$\pi = \frac{22}{7}$$)

A

345.6 cm$$^3$$

B

359.3 cm$$^3$$

C

379.3 cm$$^3$$

D

369.3 cm$$^3$$