In the experiment of diffraction at a single slit, if the slit width is decreased, the wdith of the central maximum

Options

A. increases in both Fresnel and Fraunhofer diffraction
B. decreases both in Fresnel and Fraunhofer diffraction
C. increases in Fresnel diffraction but decreases in Fraunhofer diffraction
D. decreases in Fresnel diffraction but increases in Fraunhofer diffraction.

Answer

C