In the figure, if a parallel beam of white light is incident on the plane of the slits ${\mathrm{S}}_1$ and ${\mathrm{S}}_2$ then the distance of the nearest white spot on the screen from $\mathrm{O}$ is [Assume $\mathrm{D}>>\mathrm{d},\mathrm{d}>>\mathrm{\lambda }$ ]

• A

  0
• Correct answer
  B

  $\frac{\text{3d}}{8}$
• C

  $\frac{\text{d}}{2}$
• D

  $\frac{\text{d}}{8}$

Hence, the correct answer is option: 'B'.