If we observe the single slit Fraunhofer diffraction with wavelength $\lambda$ and slit width $e$,the width of the central maxima is $2\theta$. On decreasing the slit width for the same $\lambda$,what happens to $\theta$?

• A
  $\theta$ increases
• B
  $\theta$ remains unchanged
• C
  $\theta$ decreases
• D
  $\theta$ increases or decreases depending on the intensity of light