$(6$ points$)$ This question tests your comfort with "boundary cases" of DFAs. Draw the state diagrams

of DFAs recognizing each of the following languages.

$($a$)(2$ points$)L=\{lon\}$ for $lon$ the empty string.

$($b$)(2$ points$)L=\frac{O}{?}.$

$($c$)(2$ points$)L=\{0,1{\}}^{**}.$