Water waves with wavelength $\lambda$ undergo diffraction when they travel through a barrier opening of width $d$. Which pairing of wavelength and gap width would give the largest diffraction angle?
- Agap width $= \frac{1}{2} d$, wavelength $= 2\lambda$
- Bgap width $= \frac{1}{2} d$, wavelength $= \frac{1}{2} \lambda$
- Cgap width $= 2d$, wavelength $= 2\lambda$
- Dgap width $= 2d$, wavelength $= \frac{1}{2} \lambda$