A wire of resistance $\mathrm{4 }\mathrm{\Omega }$ is stretched to twice its original length. The resistance of stretched wire would be :

• A

  16 $\mathrm{\Omega }$

• B

  2 $\mathrm{\Omega }$

• C

  4 $\mathrm{\Omega }$

• D

  8 $\mathrm{\Omega }$