When a Parallel Beam of Light Is Diffracted at a Single

Multiple Choice

When a parallel beam of light is diffracted at a single slit,

A) the shadow is always sharp.
B) the narrower the slit,the narrower the central diffraction maximum.
C) the narrower the slit,the wider the central diffraction maximum.
D) the width of the central diffraction maximum is independent of the width of the slit.
E) None of these is correct.