A negligibly small current is passed through a wire of length 15 m and uniform cross-section $6.0 \mathrm{x} {10}^{-7} {\mathrm{m}}^2$. The measured resistance of the wire is 5.0 $\mathrm{\Omega }$. The resistivity of the material is :

• A

  $1.8 \mathrm{x} {10}^{-6} \mathrm{\Omega }-\mathrm{m}$

• B

  $0.2 \mathrm{x} {10}^{-6} \mathrm{\Omega }-\mathrm{m}$

• C

  $0.6 \mathrm{x} {10}^{-6} \mathrm{\Omega }-\mathrm{m}$

• D

  $0.9 \mathrm{x} {10}^{-6} \mathrm{\Omega }-\mathrm{m}$