Select all that are correct for the following Finite Automata M

L$=(($a$^2)^*$ a b$($b $\backslash$cup a$^2\backslash$cup ab$)^*)^*$

L$=($a$^2\backslash$cup a b$^2\backslash$cup a b a$($a $\backslash$cup b$))^*$ L$=\{$a$^2$ n b$^2$ n: n$>=0\}$ L is finite M is a DFA