Monochromatic red light (wavelength \(\lambda_{\text{red}} = 650 \text{ nm}\)) and monochromatic blue light (wavelength \(\lambda_{\text{blue}} = 450 \text{ nm}\)) are shone individually through a single slit of width \(a\) onto a viewing screen at a fixed distance \(L\) from the slit. Which choice correctly compares the width of the central maximum produced by red light to that produced by blue light, and describes the effect on the width of the central maximum if the slit width \(a\) is increased?