The slant height ofa cone is 20 cm. If area of its base is 616 cm$$^2$$, then what is the cmv ed smface area of this cone? (use $$\pi = \frac{22}{7}$$)

A

960 $$cm^2$$

B

880 $$cm^2$$

C

1760 $$cm^2$$

D

440 $$cm^2$$