Light of wavelength λ passes through a single slit of width W and forms a diffraction pattern on a viewing screen. If this light is then replaced by light of wavelength 2λ, the original diffraction pattern is exactly reproduced if the width of the slit is changed to:
A) 1/2 W
B) 1/4 W
C) 2 W
D) 4 W
E) No change in the slit width is necessary