The mass of a straight copper wire is $$20.95\,g$$ and its electrical resistance is $$0.065\,\Omega$$. If the density and resistivity of copper are $$d=8900\,kg/m^3$$ and $$\rho=1.7\times10^{-8}\,ohm\,meter$$ respectively, the length of the copper wire is

A

3 m

B

6 m

C

12 m

D

data is insufficient