The diameter and height of a cylindrical tower are 10 m and 21m, respectively. What will be the cost of painting its curved surface, at the rate of Rs.8 per $$m^{2}$$?
(Use $$\pi = \frac{22}{7}$$)

A

Rs.4,980

B

Rs.5,280

C

Rs.5,490

D

Rs.5,130