What Could Have Made the Intensity Pattern Shown on a Screen

What could have made the intensity pattern shown on a screen D meters away (d is slit spacing,b is slit width and $\lambda$ is wavelength) ?

A) a double slit with D $\lambda$ /d = 1 cm
B) single slit with D $\lambda$ /b = 1 cm
C) single slit with D $\lambda$ /b = 2 cm
D) diffraction grating with D $\lambda$ /d = 1 cm
E) single slit with D $\lambda$ /b = 0.5 cm

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