When Light of Wavelength $450 \mathrm {~nm}$ Falls on a Single Slit of Width

Multiple Choice

When light of wavelength $450 \mathrm {~nm}$ falls on a single slit of width $0.30 \mathrm {~mm}$ , what is the angular width of the central bright region?

A) $0.17 ^ { \circ }$
B) $0.086 ^ { \circ }$
C) $0.13 ^ { \circ }$
D) $0.35 ^ { \circ }$
E) $0.26 ^ { \circ }$