A fin has omm diameter and 100mm length. The thermal conductivity of fin material is 400 W m$$^{-1}$$ K$$^{-1}$$. One end of the fin is maintained at $$130^\circ C$$ and its remaining surface is exposed to ambient air at $$30^\circ C$$. if the convective heat transfer coefficient is 40 Wm$$^{-2}$$K$$^{-1}$$ the heat loss (in W) from the fin is

A

0.08

B

5.0

C

7.0

D

7.8