When 5 V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is `2.5 xx 10^(-4) ms ^(-1)`. If the electron density in the wire is ` 8 xx 10^(28) m^(-3)`, the resistivity of the material is close to :
A. `1.6 xx 10^(-7) Omegam`
B. `1.6 xx 10^(-6) Omegam`
C. `1.6 xx 10^(-5) omegam`
D. `1.6 xx 10^(-8) Omegam`