Consider ten identical sources of sound all giving the same frequency but having phase angles which are random. If the average intensity of each source is  ${\mathrm{I}}_0.$ The average resultant intensity $\mathrm{I}$ due to all these ten sources will be ______

• A

  $\mathrm{I}=100{\mathrm{I}}_0$

• B

  $\mathrm{I}=10{\mathrm{I}}_0$

• C

  $\mathrm{I}={\mathrm{I}}_0$

• D

  $\mathrm{I}=\sqrt{10}{\mathrm{I}}_0$