Two coherent sources of intensities, I₁ and I₂ produce an interference pattern. The maximum intensity in the interference pattern will be

• A

  ${\mathrm{I}}_1+{\mathrm{I}}_2$

• B

  ${\mathrm{I}}_1^2+{\mathrm{I}}_2^2$

• C

  ${\left({\mathrm{I}}_1+{\mathrm{I}}_2\right)}^2$

• D

  ${\left(\sqrt{{\mathrm{I}}_1}+\sqrt{{\mathrm{I}}_2}\right)}^2$