In the figure is shown Young’s double slit experiment. Q is the position of the first bright fringe on the right side of O. P is the 11^th fringe on the other side, as measured from Q. If the wavelength of the light used is $6000\times {10}^{-10}\mathrm{m}$, then ${\mathrm{S}}_1\mathrm{B}$ will be equal to 

• A

  $6\times {10}^{-6}\mathrm{m}$

• B

  $6.6\times {10}^{-6}\mathrm{m}$

• C

  $3.138\times {10}^{-7}\mathrm{m}$

• D

  $3.144\times {10}^{-7}\mathrm{m}$